Sodium Intake Calculator

The calculator works by layering health-condition flags on top of baseline population guidelines. In the United States, the Dietary Guidelines for Americans set a general daily sodium limit of 2,300 mg for healthy adults—roughly equivalent to one teaspoon of table salt. However, this baseline is adjusted downward when risk factors like hypertension, chronic kidney disease, heart failure, or diabetes are present, because these conditions impair the body's ability to regulate fluid and blood pressure in response to excess sodium.

Key factors that shift your personal limit include your cardiovascular health status, kidney function, age, and whether you are currently on medications like ACE inhibitors or diuretics that interact with sodium balance. For example, the American Heart Association recommends that people with high blood pressure aim for no more than 1,500 mg per day, while older adults—whose kidneys become less efficient at excreting sodium—often benefit from staying closer to that lower threshold even without a formal diagnosis. Active individuals who sweat heavily may receive a slightly higher allowance, since sweat contains meaningful amounts of sodium (roughly 500–1,500 mg per hour of vigorous exercise) that must be replenished.

A common mistake users make is conflating sodium with salt. Table salt is approximately 40% sodium by weight, so 2,300 mg of sodium corresponds to about 5,750 mg (roughly one teaspoon) of salt. Hidden dietary sources—processed foods, canned soups, deli meats, condiments, and restaurant meals—account for over 70% of the average person's sodium intake, making label-reading far more important than how much salt you add at the table. The calculator helps contextualize your limit in both milligrams of sodium and grams of salt, so you can interpret nutrition labels accurately.

Once you have your personalized daily limit, practical strategies include prioritizing whole, minimally processed foods; choosing 'low sodium' products (defined as ≤140 mg per serving by the FDA); rinsing canned beans and vegetables to remove 20–40% of their sodium; and using herbs, citrus, and spices to replace salt in cooking. Tracking your intake with a food diary for even a single week is one of the most eye-opening steps you can take—most people dramatically underestimate how much sodium they consume because the majority comes invisibly packaged in prepared foods.