Daily Sodium Intake Calculator

Wondering how much sodium you should have a day? Most healthy adults are advised to stay under 2,300 mg per day (about one teaspoon of salt), and people with high blood pressure are often guided toward 1,500 mg. The average U.S. adult actually consumes around 3,400 mg, meaning most diets exceed the upper limit by roughly 1,100 mg every single day. This calculator translates those guidelines into a personal target by factoring in your age, activity level, sweat losses, and key health conditions like hypertension or kidney disease.

Enter your typical sodium intake in milligrams and the tool compares it against your customized limit, showing how much over or under you are and what that means weekly. For example, if your limit is 2,000 mg and you eat 3,200 mg, that is a 1,200 mg daily excess, or about 8,400 mg per week. Athletes losing significant sodium through sweat may need 500 to 1,500 mg more, while people on a DASH-style plan often aim closer to 1,500 mg total per day.

How it works: Pick your age band, activity level, and any relevant health condition, then enter today's sodium intake. We calculate a personalized daily ceiling and compare it to what you ate.

How Much Sodium Should You Have a Day in 2026?

Sodium is essential — it controls fluid balance, nerve signals, and muscle contraction — but most people in 2026 still eat far more than they need. Here is how to translate the major guidelines into a number that fits your life.

Daily sodium upper limits by age (2026 guidance)

Sodium in everyday foods

Why 2,300 mg is the standard adult ceiling

The 2,300 mg figure comes from controlled feeding studies showing that intakes above this level reliably raise blood pressure in salt-sensitive adults, who make up roughly half the population. The FDA, AHA, and Dietary Guidelines for Americans all converge on this number, equivalent to about 5.75 g of salt or one level teaspoon. A useful rule of thumb: if a packaged food contains more than 20% Daily Value of sodium per serving, it is high; under 5% DV is low. Most adults exceed 2,300 mg before dinner because 70% of dietary sodium comes from restaurant and processed foods.

When the target drops to 1,500 mg

The American Heart Association calls 1,500 mg per day the 'ideal limit' for adults with hypertension, prehypertension, heart failure, chronic kidney disease, diabetes, or a family history of HBP. Black adults and anyone over 51 are also considered salt-sensitive. The DASH-Sodium trial showed that dropping from 3,300 mg to 1,500 mg lowered systolic blood pressure by an average of 7.1 mm Hg in hypertensive participants — comparable to a low-dose medication. A practical rule: every 1,000 mg cut reduces systolic BP by about 2–4 mm Hg in salt-sensitive people.

Athletes and sweat losses

Sweat contains roughly 200–700 mg sodium per pound lost. A 90-minute summer run that costs 3 lbs of fluid can drain 1,500–2,000 mg of sodium — more than half a day's allowance. Endurance and hot-weather athletes therefore typically need 500–1,500 mg above baseline, and ultra-endurance racers may need 2–3 g extra on race day to prevent hyponatremia. The simple field test: if your shirt dries with visible white salt rings, you are a 'salty sweater' and likely need the upper end of that range, especially in events lasting over 2 hours.

Children, teens, and pregnancy

Kids' ceilings scale with body size: 1,500 mg for ages 4–8, 1,800 mg for 9–13, and the adult 2,300 mg from 14 onward. A single school lunch of nuggets, fries, and chocolate milk can deliver 1,200 mg — 80% of a third-grader's daily ceiling. Pregnancy does not require sodium restriction (the older 'low-salt for swelling' advice was retired decades ago); the standard 2,300 mg target still applies unless a clinician advises otherwise. Breastfeeding moderately increases needs by ~100–200 mg to replace what is secreted in milk.

How to estimate your current intake

Three quick methods work well. (1) Label math: add the sodium on every packaged food label for a day. (2) The 'restaurant meal rule': assume 1,100–1,500 mg per restaurant or fast-food meal. (3) Recall plus 500 mg: total your labels, then add 500 mg for salt you added at the table and 'hidden' sources like bread and condiments. A useful guideline: if you eat 5+ restaurant/processed meals a week, your weekly sodium from those alone is likely 5,500–7,500 mg, before any home cooking is added.

Practical ways to cut 500–1,000 mg per day

Swapping one daily restaurant meal for a home-cooked equivalent typically removes 800–1,200 mg of sodium. Rinsing canned beans drops their sodium by ~40% (about 150 mg per half-cup). Choosing 'low sodium' broth (140 mg/cup vs 860 mg) saves 700 mg in a single soup. Using lemon, vinegar, garlic, and herbs instead of table salt at finishing saves another 200–400 mg per meal. A reliable benchmark: every 1,150 mg/day reduction sustained for a month is associated with a 1 mm Hg average drop in systolic blood pressure in normotensive adults.

Can you eat too little sodium?

Yes. Below about 1,500 mg/day for extended periods, some people experience fatigue, muscle cramps, dizziness, or elevated triglycerides. True hyponatremia (serum sodium <135 mmol/L) usually requires either excessive water intake during endurance exercise or a medical condition like SIADH, not just low dietary intake. The healthy floor for most adults is roughly 1,200–1,500 mg/day. If you are on diuretics, follow a ketogenic diet, or sweat heavily, the floor effectively rises. Rule of thumb: aim for the lowest target your clinician supports, not zero.

How This Calculator Works: Methodology & Parameter Explanations

Core formula: limit_mg = max(1200, base_for_age + condition_adjustment + activity_adjustment); intake_mg = intake_unit === 'g' ? amount * 1000 : amount; gap = intake_mg - limit_mg; weekly_gap = gap * 7. Display conversion: g = mg / 1000.

Parameter explanations

Assumptions

The 2,300 mg figure mentioned in the keyword is only a default starting point — the tool computes a personalized ceiling from your actual inputs and never hard-codes that number into formulas.

Restaurant and packaged meals are modeled at an average of 1,200 mg sodium each, an industry midpoint; individual meals can vary from 600 to 2,500 mg.

Activity adjustments assume typical sweat sodium losses; very heavy 'salty sweaters' may need 25–50% more than the modeled bump.

Health-condition adjustments are general guidance, not medical advice. Targets prescribed by your clinician override this calculator.

The floor of 1,200 mg/day is enforced to avoid recommending intakes associated with negative effects in healthy adults.

Parameter meanings