Sodium Intake Calculator
The sodium intake calculator shows what percentage of the 2,300 mg daily sodium limit a food or meal uses, and how many milligrams remain for the rest of the day. Use it to quickly evaluate whether a food fits within a heart-healthy sodium budget.
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Formula
% Daily Value = (Sodium mg ÷ 2,300) × 100 | Remaining = 2,300 − Sodium mg
The FDA's daily reference value for sodium is 2,300 mg, corresponding to 100% daily value on nutrition labels. Dividing your food's sodium by 2,300 and multiplying by 100 gives the daily value percentage. Subtracting from 2,300 tells you how much budget remains for other meals.
How to use the Sodium Intake Calculator
- 1
Enter your sodium content
Value should be in mg.
- 2
Read your results instantly
Results update in real time as you type.
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Why sodium limits matter
Sodium is an essential mineral that regulates fluid balance, nerve function, and blood pressure. The challenge is that most Americans consume far more than the recommended 2,300 mg daily — the average American intake is around 3,400 mg per day, nearly 50% above the target. Excess sodium is strongly associated with elevated blood pressure, which is the leading risk factor for cardiovascular disease and stroke. The relationship is dose-dependent: even modest reductions in sodium intake (about 400 mg per day) produce measurable blood pressure reductions within weeks. The American Heart Association recommends an even lower target of 1,500 mg daily for people with high blood pressure, heart failure, or kidney disease. About 70% of dietary sodium comes from processed and restaurant foods, not the salt shaker, which is why reading nutrition labels and using tools like this calculator are essential for managing intake.
High-sodium foods to watch
The top contributors to sodium in the American diet are not what most people expect. Bread and rolls are the single largest source — not because any one slice is extremely high in sodium, but because of how frequently they are consumed. Other major contributors include cold cuts and cured meats, pizza, canned soups, burritos and tacos, and savory snacks. Restaurant food is particularly sodium-dense: a single restaurant meal often exceeds 2,000 mg of sodium. Fast food sandwiches frequently contain 1,000–1,500 mg each. One tablespoon of soy sauce contains about 900 mg of sodium — nearly 40% of the daily limit. Switching to low-sodium versions of soy sauce, canned goods, broths, and condiments can reduce sodium intake by 400–600 mg per day without changing what you eat.
Tips & Insights
Rinse canned beans and vegetables
Draining and rinsing canned beans reduces their sodium content by 40–50%. This simple step cuts over 200 mg of sodium per serving with no recipe modification required.
Cook grains without added salt
Rice, pasta, and oatmeal cooked without salt are naturally very low in sodium. Adding salt during cooking adds 200–400 mg per serving. Season with herbs, lemon, or spices instead.
Read labels for sodium per serving
Nutrition labels list sodium per serving. Check how many servings are in the container — a soup that lists 800 mg per serving with 2.5 servings per can actually contains 2,000 mg if you eat the whole can.
Worked Examples
Canned chicken noodle soup (1 can)
78.3% of daily value — a single can of soup uses nearly 80% of the recommended daily sodium limit, leaving only 500 mg for the rest of the day.
Homemade grilled chicken (6 oz)
5.7% of daily value — plain grilled chicken is very low in sodium, leaving 2,170 mg of daily budget available.
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Frequently Asked Questions
What is the recommended daily sodium intake?
The FDA and Dietary Guidelines for Americans recommend less than 2,300 mg per day for healthy adults. The American Heart Association recommends 1,500 mg per day for people with cardiovascular risk factors.
Is all sodium from table salt?
No. Table salt is about 40% sodium by weight, but most dietary sodium comes from processed foods, restaurant meals, and packaged snacks — not from salt added at the table, which accounts for only about 11% of intake.
Does drinking more water help with high sodium intake?
Adequate hydration helps the kidneys excrete excess sodium more effectively. However, water is not a substitute for reducing sodium intake — it only partially offsets the blood pressure effects of a high-sodium diet.
What happens if you eat too much sodium?
Short term: water retention, bloating, elevated blood pressure. Long term: chronically high sodium is associated with sustained hypertension, increased risk of stroke, heart disease, and kidney disease.
Are sea salt and kosher salt lower in sodium than table salt?
By weight, no — sea salt, kosher salt, and table salt all contain about the same amount of sodium. Kosher salt crystals are larger, so a tablespoon by volume contains less sodium than a tablespoon of fine table salt, but they are equal by weight.
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