303+ precision calculators • AI insights
Calculate anything.
Understand every number.
Finance, health, math, cooking and everyday tools — with detailed breakdowns, charts and plain-English AI explanations. 100% free, no login required.
Popular this week
Trending nowMost popular
The tools people reach for every day.
Crypto Value Calculator
See the live value of your crypto holdings with real-time prices and 24h change.
Open
Precious Metal Value
Value your gold by weight and purity using live spot prices.
Open
Portfolio Tracker
Add your coins and metals to see your total net worth update live.
Open
Mortgage Calculator
Monthly principal & interest, taxes, insurance, PMI and a full amortization schedule.
Open
Compound Interest
Project savings growth with regular deposits and compounding frequency.
Open
BMI Calculator
Body Mass Index with WHO categories and your healthy weight range.
Open
Cooking Converter
Cups to grams by ingredient (flour, sugar, butter), ml, tbsp and oven temps.
OpenFinancial
Mortgages, compound interest, loans & paycheck tools with amortization charts.
Mortgage Calculator
Monthly principal & interest, taxes, insurance, PMI and a full amortization schedule.
OpenCompound Interest
Project savings growth with regular deposits and compounding frequency.
Open
Loan & Auto Calculator
Monthly installment, total interest, payoff date and extra-payment savings.
Open
Salary ↔ Hourly
Convert annual pay to hourly, monthly, weekly and see overtime rates.
Open
Retirement Calculator
Project your nest egg at retirement and the monthly income it can provide.
Open
Income Tax Estimator
Estimate US federal income tax, effective rate and take-home pay by filing status.
Open
Simple Interest
Interest and final balance using the simple (non-compounding) interest formula.
Open
Sales Tax Calculator
Add or remove sales tax and see the pre-tax price, tax amount and total.
Open
Savings Goal Planner
Find the monthly amount to save to hit a target by a chosen date.
Open
Inflation Calculator
See how inflation changes buying power and the future cost of money.
Open
Credit Card Payoff
How long to clear a card balance and the total interest you'll pay.
Open
APY Calculator
Turn a nominal interest rate into the true annual percentage yield by compounding frequency.
Open
CAGR Calculator
Compound annual growth rate between a starting and ending value over time.
Open
IRR Calculator
Internal rate of return for a series of cash flows and net present value.
Open
SIP Calculator
Future value of a monthly systematic investment plan with a growth breakdown.
Open
Amortization Schedule
Full month-by-month loan amortization table with principal, interest and balance.
Open
Profit Margin
Gross margin, markup and profit from cost and selling price.
Open
GDP Calculator
Gross domestic product by the expenditure approach, plus GDP per capita.
Open
Future Value Calculator
Project the future value of a lump sum plus regular monthly contributions.
Open
Present Value Calculator
How much a future sum is worth today at a given discount rate.
Open
ROI Calculator
Return on investment, net profit and annualized ROI for any investment.
Open
Down Payment Calculator
Down payment amount and loan balance from price and percentage.
Open
Debt-to-Income Ratio
Your DTI ratio and how lenders view it for loan approval.
Open
Pay Raise Calculator
New salary, raise amount and monthly increase from a percentage raise.
Open
Break-Even Calculator
Units and revenue needed to cover fixed costs, plus contribution margin.
Open
Depreciation Calculator
Straight-line annual and monthly depreciation for an asset.
Open
Rule of 72 Calculator
How many years it takes your money to double at a given rate.
Open
Net Worth Calculator
Your net worth from total assets minus total liabilities.
Open
VAT Calculator
Add or remove VAT and see net, tax and gross amounts.
Open
CD Calculator
Certificate of deposit maturity value, interest earned and effective APY.
Open
Annuity Payout Calculator
Monthly income a starting balance can pay out over a fixed period.
Open
Sales Commission Calculator
Commission earned and total pay from sales, rate and optional base salary.
Open
Loan-to-Value (LTV)
LTV ratio and home equity from loan amount and property value.
Open
Overtime Pay Calculator
Regular pay, overtime pay and total gross with a custom OT multiplier.
Open
Interest-Only Payment
Monthly and annual interest-only payment on a loan balance.
Open
50/30/20 Budget Calculator
Split monthly income into needs, wants and savings with the 50/30/20 rule.
Open
Dividend Yield Calculator
Dividend yield and annual income from dividends and share price.
Open
Bond Yield Calculator
Current yield of a bond from coupon, face value and price.
Open
HELOC Calculator
Home equity line of credit available from value, balance and LTV.
Open
Home Equity Calculator
Your home equity and equity percentage from value and mortgage.
Open
Car Affordability
The car price you can afford from a monthly payment budget.
Open
House Affordability
The home price you can afford using the 28/36 lending rule.
Open
Rental Yield Calculator
Gross and net rental yield for an investment property.
Open
Cap Rate Calculator
Capitalization rate from net operating income and property value.
Open
Cash-on-Cash Return
Cash-on-cash return from annual cash flow and cash invested.
Open
Gross Rent Multiplier
GRM from property price and annual gross rent.
Open
Payback Period
Years to recover an investment from its annual cash flow.
Open
Markup Calculator
Markup and margin percentages from cost and selling price.
Open
Effective Annual Rate
Effective annual rate (EAR) from a nominal rate and compounding.
Open
P/E Ratio Calculator
Price-to-earnings ratio and earnings yield of a stock.
Open
401(k) Calculator
Project your 401(k) balance at retirement with employer match.
Open
Mortgage Payoff Calculator
How much sooner you pay off and interest saved with extra monthly payments.
Open
Loan Payoff Calculator
Months to pay off a balance and total interest at a fixed payment.
Open
Biweekly Mortgage
Interest and years saved by paying your mortgage biweekly instead of monthly.
Open
Refinance Calculator
New payment, monthly savings and break-even point on a refinance.
Open
Mortgage Points Calculator
Break-even on buying mortgage points to lower your rate.
Open
PMI Calculator
Estimated monthly private mortgage insurance and when it drops off.
Open
State Income Tax Calculator
Estimate state income tax for all 50 states + DC with brackets or flat rates.
Open
Credit Utilization
Your credit utilization ratio and how much to pay down to reach 30%.
Open
Rent Affordability
How much rent you can afford from your income and the 30% rule.
Open
Emergency Fund Calculator
Your emergency fund target and how much is left to save.
Open
Savings Rate Calculator
What percentage of your income you're saving each month.
Open
Paycheck Calculator
Estimate take-home pay per paycheck after federal, FICA and state taxes.
Open
Auto Lease Calculator
Monthly car lease payment from price, residual, money factor and term.
Open
Auto Insurance Estimator
Ballpark car insurance premium from age, coverage, vehicle value and record.
Open
Property Tax Calculator
Annual and monthly property tax from home value, assessment ratio and rate.
Open
Life Insurance Calculator
How much term life coverage you need using the DIME method.
Open
Net Income Calculator
Take-home income after taxes and deductions, per year and month.
Open
Tax Refund Estimator
Estimate your federal tax refund or amount owed from income and withholding.
Open
Mortgage Discount Points
Cost of buying discount points and the break-even on the lower rate.
Open
Home Sale Proceeds
Net cash from selling a home after mortgage payoff, commission and closing costs.
Open
Boat Loan Calculator
Monthly payment and total interest on a boat or marine loan.
OpenHealth & Fitness
BMI, BMR, daily calorie targets and healthy weight ranges.
BMI Calculator
Body Mass Index with WHO categories and your healthy weight range.
Open
Calorie & BMR
Basal metabolic rate (Mifflin-St Jeor) and daily calorie targets by goal.
Open
Body Fat Calculator
Estimate body-fat percentage with the U.S. Navy tape method.
Open
Ideal Weight
Healthy target weight from four clinical formulas (Devine, Robinson, Miller, Hamwi).
Open
Water Intake
Recommended daily water based on weight and activity level.
Open
Running Pace
Pace, finish time or distance for runs — 5K, 10K, half & full marathon.
Open
Pregnancy & Due Date
Estimate due date, current week, trimester and key milestones from your last period.
Open
One-Rep Max (1RM)
Estimate your max lift from reps (Epley & Brzycki) plus a training-percentage table.
Open
Macro Calculator
Split daily calories into protein, carbs and fat grams for your chosen diet.
Open
Lean Body Mass
Lean mass and fat mass from the Boer formula using height and weight.
Open
Calories Burned
Calories burned by activity using MET values, your weight and workout duration.
Open
Ovulation Calculator
Estimate your ovulation day and most fertile window from your cycle.
Open
TDEE Calculator
Total daily energy expenditure with cut and bulk calorie targets.
Open
Waist-to-Hip Ratio
Waist-to-hip ratio and health-risk category by gender.
Open
Waist-to-Height Ratio
Waist-to-height ratio, a simple cardiometabolic risk indicator.
Open
Protein Intake Calculator
Daily protein target in grams for your body weight and goal.
Open
Target Heart Rate
Personalized training heart rate using the Karvonen method.
Open
Max Heart Rate
Estimated maximum heart rate and training zones by formula.
Open
Conception Calculator
Estimated conception date, fertile window and due date from your last period.
Open
Blood Alcohol (BAC)
Estimated blood alcohol content by the Widmark formula.
Open
Sleep Calculator
Total sleep and 90-minute sleep cycles between bedtime and wake time.
Open
Steps to Calories
Calories burned and distance walked from your step count.
Open
VO₂ Max Calculator
Estimate VO₂ max and fitness rating from the Cooper 12-minute run.
Open
Body Surface Area (BSA)
Body surface area by the Mosteller and Du Bois formulas.
Open
Weight Loss Goal
Weekly loss and daily calorie deficit to hit a goal weight by a date.
Open
Calories from Macros
Total calories and split from protein, carb and fat grams.
Open
Army Body Fat Calculator
Body-fat percentage using the US military tape (circumference) method.
Open
Pregnancy Weight Gain
Recommended pregnancy weight gain by pre-pregnancy BMI and week.
Open
Child Height Predictor
Predict a child's adult height from the parents' heights.
Open
Smoking Cost Calculator
How much smoking costs per day, month, year and over time.
Open
Keto Macro Calculator
Daily fat, protein and carb grams for a ketogenic diet.
Open
Alcohol Calories
Calories in an alcoholic drink from volume, ABV and carbs.
Open
Carb Intake Calculator
Daily carbohydrate target in grams for your weight and activity.
Open
FFMI Calculator
Fat-free mass index and normalized FFMI from weight, height and body fat.
Open
Ponderal Index
Ponderal index — a height-adjusted body mass measure.
Open
BMI Prime Calculator
BMI Prime — your BMI as a ratio to the upper healthy limit.
Open
Adjusted Body Weight
Ideal and adjusted body weight for clinical dosing.
Open
Macro Split Calculator
Protein, carb and fat grams from calories and a chosen split.
Open
Gestational Age Calculator
Weeks pregnant, trimester and due date from your last period.
Open
Waist Circumference Risk
Health-risk category from waist size using WHO thresholds by gender.
Open
RMR Calculator
Resting metabolic rate via Mifflin-St Jeor or Katch-McArdle.
Open
Fat Intake Calculator
Daily fat grams from your calories and target fat percentage.
Open
Sodium Intake Calculator
Recommended daily sodium limit for your health situation.
Open
Walking Calories Calculator
Calories burned and distance covered from your walk time and pace.
OpenMath
Percentages, discounts and a full scientific calculator.
Percentage Calculator
Percent of, percent change, and add/subtract a percentage instantly.
Open
Scientific Calculator
Full keypad with trig, powers, roots, logs, parentheses and memory.
Open
Fraction Calculator
Add, subtract, multiply and divide fractions with a simplified result.
Open
Standard Deviation
Mean, variance, standard deviation and count for a set of numbers.
Open
Random Number Generator
Generate random numbers in a range, with or without duplicates.
Open
Average / Mean
Mean, median, mode, range and sum for any list of numbers.
Open
Triangle Solver
Angles, area, perimeter and type of a triangle from its three sides.
Open
Significant Figures
Count significant figures and round a number to a chosen precision.
Open
Ratio Calculator
Simplify a ratio, get its decimal value and scale it to a new term.
Open
Number Base Converter
Convert between binary, octal, decimal and hexadecimal instantly.
Open
Density Calculator
Solve density, mass or volume with ρ = m / V.
Open
Probability Calculator
P(A and B), P(A or B), P(neither) for two independent events.
Open
Half-Life Calculator
Remaining quantity after decay from initial amount, half-life and elapsed time.
Open
Logarithm Calculator
Logarithm of any value to any base, plus natural, log₁₀ and log₂.
Open
Root Calculator
nth root of a number, plus square and cube roots.
Open
Exponent Calculator
Raise any base to any power, with squares and cubes.
Open
Quadratic Formula Solver
Solve ax² + bx + c = 0 with real or complex roots and the discriminant.
Open
Slope Calculator
Slope, y-intercept and angle of the line through two points.
Open
Distance Calculator
Straight-line distance between two points on a plane.
Open
Midpoint Calculator
The midpoint of a line segment between two coordinates.
Open
Circle Calculator
Area, circumference and diameter of a circle from its radius.
Open
Pythagorean Theorem
Find the hypotenuse or a missing leg of a right triangle.
Open
LCM & GCF Calculator
Least common multiple and greatest common factor of two numbers.
Open
Factorial Calculator
Compute n! for any non-negative integer.
Open
Permutation & Combination
nPr and nCr — count ordered arrangements and unordered selections.
Open
Percentage Change
Percent increase or decrease between an old and new value.
Open
Z-Score Calculator
Standard score and percentile of a value in a normal distribution.
Open
Modulo Calculator
Remainder and quotient of a division (a mod n).
Open
Proportion Calculator
Solve A/B = C/X for the missing term by cross-multiplication.
Open
Rounding Calculator
Round a number to any number of decimal places, up, down or nearest.
Open
Variance Calculator
Sample or population variance and standard deviation of a data set.
Open
Percentile Calculator
The nth percentile of a data set with min, median and max.
Open
Confidence Interval
Confidence interval for a mean from sample size and standard deviation.
Open
Sample Size Calculator
Survey sample size needed for a target margin of error and confidence.
Open
Margin of Error
Margin of error for a survey from sample size, proportion and confidence.
Open
Binomial Probability
Exact and cumulative binomial probabilities for n trials.
Open
Arithmetic Sequence
The nth term and sum of an arithmetic sequence.
Open
Geometric Sequence
The nth term and sum of a geometric sequence.
Open
Exponential Growth
Growth or decay of a value over a number of periods.
Open
Scientific Notation
Convert a number to scientific, engineering and E-notation.
Open
Decimal to Fraction
Convert a decimal into its simplest fraction.
Open
Fraction to Decimal
Convert a fraction into a decimal and percentage.
Open
Weighted Average
Weighted mean of values with matching weights.
Open
Golden Ratio Calculator
Split a length into the golden ratio (φ ≈ 1.618).
Open
Odds to Probability
Convert betting odds into win probability and decimal odds.
Open
Geometric Mean
Geometric mean of a set of positive numbers.
Open
Sphere Calculator
Volume, surface area and diameter of a sphere from its radius.
Open
Cube Calculator
Volume, surface area and diagonal of a cube.
Open
Cylinder Calculator
Volume, surface area and lateral area of a cylinder.
Open
Cone Calculator
Volume, surface area and slant height of a cone.
Open
Rectangular Box Calculator
Volume, surface area and diagonal of a rectangular prism.
Open
Pyramid Calculator
Volume, surface area and slant height of a square pyramid.
Open
Ellipse Calculator
Area, circumference and eccentricity of an ellipse.
Open
Trapezoid Calculator
Area and median of a trapezoid from its parallel sides and height.
Open
Parallelogram Calculator
Area of a parallelogram from base and height.
Open
Regular Polygon Calculator
Area, perimeter, apothem and interior angle of a regular polygon.
Open
Linear Regression
Best-fit line (slope, intercept), correlation and R² from x/y data.
Open
Correlation Calculator
Pearson correlation coefficient (r) between two data sets.
Open
Covariance Calculator
Sample and population covariance between two variables.
Open
Quartile & IQR Calculator
Five-number summary: min, Q1, median, Q3, max and the IQR.
Open
Coefficient of Variation
Relative variability (CV) of a data set as a percentage.
Open
Standard Error Calculator
Standard error of the mean from a sample of numbers.
Open
Harmonic Mean
Harmonic mean of a set of positive numbers.
Open
Root Mean Square (RMS)
The root mean square of a set of numbers.
Open
Prime Number Checker
Check if a number is prime and see its prime factorization.
Open
Fibonacci Calculator
The nth Fibonacci number and the sequence up to it.
Open
Triangle Area Calculator
Area of a triangle from its base and height.
Open
3D Distance Calculator
Straight-line distance between two points in 3D space.
Open
Rectangle Calculator
Area, perimeter and diagonal of a rectangle.
Open
Square Calculator
Area, perimeter and diagonal of a square.
Open
Rhombus Calculator
Area, side and perimeter of a rhombus from its diagonals.
Open
Hexagon Calculator
Area, perimeter and apothem of a regular hexagon.
Open
Circle Sector Calculator
Sector area, arc length and chord of a circle.
Open
Annulus (Ring) Calculator
Area and width of a ring between two concentric circles.
Open
Torus Calculator
Volume and surface area of a torus (donut).
Open
Triangular Prism Calculator
Volume of a triangular prism from base, height and length.
Open
T-Test Calculator (One-Sample)
One-sample t-statistic and degrees of freedom for a hypothesis test.
Open
Two-Sample T-Test
Welch's t-test comparing the means of two independent groups.
Open
Mean Absolute Deviation
Average absolute distance of values from the mean (MAD).
Open
Midrange Calculator
The midrange (min + max) / 2 of a data set.
Open
Sum of Squares
Total squared deviation from the mean.
Open
Mode Calculator
The most frequent value(s) in a data set.
Open
Range Calculator
The range, minimum and maximum of a data set.
Open
Outlier Calculator
Detect outliers with the 1.5 × IQR rule.
Open
Frustum Calculator
Volume and surface area of a conical frustum.
Open
Ellipsoid Calculator
Volume and surface area of a triaxial ellipsoid.
Open
Hemisphere Calculator
Volume and surface area of a hemisphere.
Open
Spherical Cap Calculator
Volume and curved area of a spherical cap.
Open
Capsule Calculator
Volume and surface area of a capsule (pill) shape.
Open
Pentagon Calculator
Area and perimeter of a regular pentagon.
Open
Octagon Calculator
Area and perimeter of a regular octagon.
Open
Kite Area Calculator
Area of a kite from its two diagonals.
Open
ANOVA Calculator (One-Way)
One-way analysis of variance F-statistic and ANOVA table from group data.
Open
Chi-Square Calculator
Chi-square goodness-of-fit statistic from observed and expected counts.
Open
Dodecahedron Calculator
Volume and surface area of a regular dodecahedron from its edge.
Open
Octahedron Calculator
Volume and surface area of a regular octahedron from its edge.
Open
Tetrahedron Calculator
Volume, surface area and height of a regular tetrahedron.
Open
Hollow Cylinder Calculator
Material volume and surface area of a tube from outer and inner radius.
Open
Change of Base Logarithm
Logarithm in any base plus natural, log₁₀ and log₂ via change of base.
Open
2×2 Matrix Determinant
Determinant and inverse of a 2×2 matrix (ad − bc).
Open
Vector Magnitude Calculator
Magnitude and unit vector of a 2D or 3D vector.
Open
GCD & LCM of a List
Greatest common divisor and least common multiple of several numbers.
OpenCooking
Cups to grams by ingredient, butter, baking units & oven temps.
Cooking Converter
Cups to grams by ingredient (flour, sugar, butter), ml, tbsp and oven temps.
Open
Recipe Scaler
Scale any ingredient amount up or down for a new number of servings.
Open
Air Fryer Converter
Convert oven temperature and time to air fryer settings.
Open
Oven Temperature Converter
Convert oven temperatures between °C, °F and gas mark, with fan adjustment.
Open
Coffee Ratio Calculator
Coffee grams needed for your water and brew ratio.
Open
Butter Converter
Convert butter between sticks, cups, tablespoons, grams and ounces.
Open
Rice to Water Ratio
Water needed for perfect rice by type and quantity.
Open
Cooking Substitutions
Instant swaps for buttermilk, eggs, baking powder and more.
Open
Yeast Converter
Convert between active dry, instant and fresh yeast by weight.
Open
Honey ↔ Sugar Substitute
Swap sugar and honey in recipes with liquid and temperature tweaks.
Open
Baking Pan Converter
Scale a recipe when you switch to a different size baking pan.
OpenConversions
Length, weight, volume, temperature, speed & data converters.
Unit Converter
Length, weight, volume, temperature, speed and digital data conversions.
Open
Currency Converter
Convert between 150+ world currencies using live daily exchange rates.
Open
Height Converter
Convert height between centimeters and feet & inches, both directions.
Open
Weight Converter
Convert weight between kilograms, pounds and stone.
Open
Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin instantly.
Open
Speed Converter
Convert between m/s, km/h, mph, knots and ft/s.
Open
Pressure Converter
Convert between Pa, kPa, bar, psi, atm and mmHg.
Open
Energy Converter
Convert between joules, calories, kWh, BTU and more.
Open
Power Converter
Convert between watts, kilowatts, horsepower and BTU/hr.
Open
Angle Converter
Convert between degrees, radians, gradians and revolutions.
Open
Data Storage Converter
Convert between bytes, KB, MB, GB, TB and bits.
Open
Data Transfer Rate
Convert between bps, Mbps, Gbps and MB/s.
Open
Time Converter
Convert between seconds, minutes, hours, days, weeks and years.
Open
Volume Converter
Convert between liters, mL, gallons, quarts, cups and m³.
Open
Area Converter
Convert between m², ft², acres, hectares and square miles.
Open
Frequency Converter
Convert between Hz, kHz, MHz, GHz and RPM.
Open
Fuel Economy Converter
Convert between MPG (US/UK), L/100km and km/L.
Open
Torque Converter
Convert between N·m, lb·ft, lb·in and kgf·m.
Open
Force Converter
Convert between newtons, kN, pound-force, kgf and dynes.
Open
Density Converter
Convert between kg/m³, g/cm³, lb/ft³ and lb/gallon.
Open
Flow Rate Converter
Convert between L/s, L/min, m³/h, GPM and ft³/s.
OpenEveryday
Age & date differences and road-trip fuel cost sharing.
Age & Date Difference
Exact age in years, months & days, total days lived and next birthday.
Open
Fuel & Trip Cost
Trip gas budget, cost per person split, fuel used and efficiency.
Open
Days Between Dates
Count days, weeks, months and business days between two dates.
Open
Tip Calculator
Tip amount, total and per-person split for any bill.
Open
Discount Calculator
Sale price and money saved from a percentage discount.
Open
GPA Calculator
Weighted grade point average from your courses and credit hours.
Open
Password Generator
Create strong, random passwords with custom length and character sets.
Open
Roman Numeral Converter
Convert between numbers and Roman numerals in either direction.
Open
Hours Calculator
Time worked between two times minus breaks, in hours & decimal hours.
Open
Date Add / Subtract
Add or subtract days, weeks and months from any date to find a new date.
Open
Day of the Week
Find the weekday, day of year and week number for any date.
Open
Countdown Calculator
Days, weeks and hours remaining until (or since) any date.
Open
Electricity Cost
Daily, monthly and yearly running cost of any electrical appliance.
Open
Grade Calculator
Convert points earned into a percentage and letter grade.
Open
Final Grade Calculator
The score you need on the final exam to hit your target grade.
Open
Unit Price Comparison
Compare two products by price per unit to find the better value.
Open
Speed, Distance & Time
Solve for speed, distance or time given the other two.
Open
Subnet Calculator
IPv4 network, broadcast, mask, host range and usable hosts from CIDR.
Open
Gas Mileage (MPG)
Miles per gallon from distance driven and fuel used, with L/100km.
Open
Time Duration Calculator
Duration between two dates and times in days, hours and minutes.
Open
Age Difference Calculator
The age gap between two people in years, months and days.
Open
Dog Age Calculator
Your dog's age in human years using the science-based formula.
Open
Cat Age Calculator
Your cat's age in human years and life stage.
Open
Reading Time Calculator
How long a text takes to read and to speak aloud.
Open
Business Days Calculator
Count business (weekday) days between two dates.
Open
Lottery Odds Calculator
Your odds of winning a pick-k-of-n lottery jackpot.
Open
Tip & Bill Splitter
Total a bill from item prices, add tip and tax, and split per person.
Open
Gas Trip Cost
Fuel cost of a trip from distance, MPG and fuel price.
Open
Pizza Party Calculator
How many pizzas to order for a group by slices per person.
Open
Next Birthday Countdown
Days until your next birthday and the age you'll turn.
Open
Parking Cost Calculator
Total parking cost from hourly rate, hours and a daily maximum.
Open
Tips Hourly Wage
Your effective hourly pay when base wage and tips are combined.
Open
Roman Numeral Date
Convert any date into Roman numerals for tattoos, monuments and design.
Open
Wind Chill Calculator
The 'feels like' temperature from air temp and wind speed (NWS formula).
Open
Heat Index Calculator
The 'feels like' temperature from heat and humidity with a risk level.
OpenConstruction
Concrete, gravel and material volume & quantity estimators.
Concrete Calculator
Concrete volume for slabs & footings in cubic yards/meters, plus bags needed.
Open
Gravel & Aggregate
Gravel, sand or aggregate volume and weight in tons for a given area and depth.
Open
Tile Calculator
Number of tiles needed for a floor or wall, including waste.
Open
Mulch Calculator
Cubic yards and bags of mulch for a garden bed at a given depth.
Open
Paint Calculator
Gallons of paint needed for a wall area and number of coats.
Open
Wallpaper Calculator
Rolls of wallpaper needed for your wall area, including waste.
Open
Square Footage
Area in square feet, meters, yards and acres from length and width.
Open
Roofing Calculator
Roofing squares and shingle bundles needed for a roof area.
Open
Drywall Calculator
Number of drywall sheets needed for a wall and ceiling area.
Open
Flooring Calculator
Boxes of flooring needed for a room area, including waste.
Open
Brick Calculator
Number of bricks needed for a wall area with a waste allowance.
Open
Asphalt Calculator
Tons of hot-mix asphalt for a driveway or lot at a given depth.
Open
Board Foot Calculator
Board feet of lumber from length, width, thickness and quantity.
Open
BTU Calculator
BTU and tonnage needed to heat or cool a room by area.
Open
Fence Calculator
Posts, rails and pickets needed for a fence of a given length.
OpenCrypto
Live crypto prices — see exactly what your coins are worth right now.
Commodities
Live gold & silver spot prices — value your metals by weight and purity.