Sodium Calculator

The FDA recommends a daily sodium limit of 2,300 mg for the general adult population. The American Heart Association recommends an even lower 1,500 mg ideal limit. People with hypertension, kidney disease, or heart failure should typically stay at or below 1,500-2,000 mg. Our sodium calculator picks the right limit for your situation, compares it to your current intake, and shows the gap in mg, percentage, and teaspoons of salt equivalent.

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analyticsSodium Limit

Your Limit
2,300 mg
AHA ideal: 1,500 mg
Over By
+1,100 mg (47.8%)
1.48 tsp salt equivalent
Excessive
Interpretation
Substantially above limit — significant cardiovascular and kidney risk over time

tips_and_updates Tips

  • FDA: 2,300 mg/day general adult limit
  • AHA ideal: 1,500 mg/day for cardiovascular health
  • Hypertension/CKD: 1,500-2,000 mg/day
  • Average US adult eats 3,400+ mg/day — well above all limits
  • 75% of dietary sodium comes from processed and restaurant foods, not the salt shaker
  • 1 teaspoon of salt ≈ 2,300 mg sodium
  • Athletes may need slightly more sodium due to sweat losses

How to Use This Calculator

1

Enter age

Provide your age (older adults often have lower limits).

2

Toggle health conditions

Check hypertension, kidney disease, or athlete status if applicable.

3

Enter current intake

Input your typical daily sodium intake from food labels and food tracking.

4

Read your limit

See your personal limit and gap in mg, %, and teaspoons of salt.

The Formula

Most US adults consume 3,400+ mg/day — far above all recommended limits. Reducing sodium intake lowers blood pressure, especially in salt-sensitive individuals. The relationship between dietary sodium and cardiovascular events is well-established. Most dietary sodium comes from processed and restaurant foods, not the salt shaker.

FDA limit: 2,300 mg/day • AHA ideal: 1,500 mg/day • HTN/CKD: 1,500-2,000 mg/day

lightbulb Variables Explained

  • FDA Limit Tolerable daily limit for healthy adults
  • AHA Ideal Recommended ideal for cardiovascular health
  • HTN Limit Lower limit for hypertension/CKD patients
  • Salt Equivalent 1 tsp salt ≈ 2,300 mg sodium

tips_and_updates Pro Tips

1

FDA: 2,300 mg/day general adult limit

2

AHA ideal: 1,500 mg/day for cardiovascular health

3

Hypertension/CKD: 1,500-2,000 mg/day

4

Average US adult eats 3,400+ mg/day — well above all limits

5

75% of dietary sodium comes from processed and restaurant foods, not the salt shaker

6

1 teaspoon of salt ≈ 2,300 mg sodium

7

Athletes may need slightly more sodium due to sweat losses

Sodium is an essential electrolyte that regulates fluid balance, nerve transmission, and muscle contraction, but most people consume far more than they need. The American Heart Association recommends no more than 2,300 mg per day — with an ideal limit of 1,500 mg for most adults — yet the average American intake exceeds 3,400 mg daily, with over 70% coming from processed and restaurant foods rather than the salt shaker. Excess sodium intake is strongly linked to hypertension (high blood pressure), which affects nearly half of US adults and is a leading risk factor for heart disease, stroke, and kidney disease. A 2019 meta-analysis in The BMJ found that reducing sodium intake by 1,000 mg per day lowered systolic blood pressure by an average of 5.8 mmHg in hypertensive individuals. However, sodium needs vary significantly based on activity level, climate, and health conditions — endurance athletes losing 900-1,800 mg of sodium per liter of sweat may need substantially more than sedentary individuals. Understanding your personal sodium requirements helps you make informed dietary choices that support cardiovascular health without unnecessary restriction.

Why most people consume too much sodium

It's not the salt shaker — it's the food industry. Processed foods, restaurant meals, breads, sauces, and even seemingly healthy items like canned soups and frozen meals are loaded with sodium for flavor and preservation. A single restaurant meal can easily contain 2,000-3,000 mg of sodium. The most effective way to cut sodium is to cook at home with whole ingredients, not to use less salt at the table.

Frequently Asked Questions

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Data sourced from trusted institutions

All formulas verified against official standards.