Conversions Calculators
Length, weight, volume, temperature, speed & data converters.
Unit Converter
Length, weight, volume, temperature, speed and digital data conversions.
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Currency Converter
Convert between 150+ world currencies using live daily exchange rates.
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Height Converter
Convert height between centimeters and feet & inches, both directions.
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Weight Converter
Convert weight between kilograms, pounds and stone.
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Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin instantly.
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Speed Converter
Convert between m/s, km/h, mph, knots and ft/s.
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Pressure Converter
Convert between Pa, kPa, bar, psi, atm and mmHg.
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Energy Converter
Convert between joules, calories, kWh, BTU and more.
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Power Converter
Convert between watts, kilowatts, horsepower and BTU/hr.
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Angle Converter
Convert between degrees, radians, gradians and revolutions.
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Data Storage Converter
Convert between bytes, KB, MB, GB, TB and bits.
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Data Transfer Rate
Convert between bps, Mbps, Gbps and MB/s.
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Time Converter
Convert between seconds, minutes, hours, days, weeks and years.
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Volume Converter
Convert between liters, mL, gallons, quarts, cups and m³.
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Area Converter
Convert between m², ft², acres, hectares and square miles.
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Frequency Converter
Convert between Hz, kHz, MHz, GHz and RPM.
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Fuel Economy Converter
Convert between MPG (US/UK), L/100km and km/L.
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Torque Converter
Convert between N·m, lb·ft, lb·in and kgf·m.
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Force Converter
Convert between newtons, kN, pound-force, kgf and dynes.
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Density Converter
Convert between kg/m³, g/cm³, lb/ft³ and lb/gallon.
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Flow Rate Converter
Convert between L/s, L/min, m³/h, GPM and ft³/s.
Open calculatorConvert any unit, instantly
Unit conversion is one of those tasks that feels simple until an error creeps in — and in engineering, travel or cooking, the wrong unit can be costly. Our converters handle length, mass, volume, area, speed, temperature, data, energy and more, with results you can trust and a formula you can check.
Each conversion page shows the exact answer, the formula used, the reverse conversion and a full reference table for nearby values. That means you can grab a single number quickly or use the page as a lookup chart — for example, seeing 1 through 100 of a unit converted at a glance rather than recalculating each time.
What you can do with our conversions calculators
- Convert length, weight, volume, area and speed between any units
- Switch temperatures between Celsius, Fahrenheit and Kelvin
- Convert data sizes from bytes up to terabytes
- Read a full conversion table and the exact formula for each unit pair