Daily Salt Allowance Calculator

Calculator Form

This adult-oriented planning tool helps set a daily sodium target, convert it to salt grams, and compare intake patterns.

Adult age (years)

Body weight (kg)

Daily calories (kcal)

Meals per day

Nutrition profile

Activity or climate

Current sodium intake (mg/day)

Optional. Leave blank to use the quick estimator.

Added table salt (g/day)

Used only when direct sodium intake is not entered.

Restaurant or processed meals/day

Quick intake estimator input.

Planning notes

Important: This is a meal-planning calculator for adults. It does not replace clinician advice for blood pressure, kidney disease, fluid balance, or medical nutrition therapy.

Example Data Table

Profile	Weight (kg)	Calories	Activity	Target Sodium (mg/day)	Salt Equivalent (g/day)
Lower-sodium focus	70	1800	Cool climate	1330	3.33
General balance	70	2000	Light activity	1900	4.75
Practical upper limit	85	2400	Moderate activity	2300	5.75
General balance	55	1600	Cool climate	1530	3.83

Formula Used

The calculator uses a transparent planning model:

1) Body and energy factor

calorie factor = clamp(daily calories ÷ 2000, 0.85, 1.15)

weight factor = clamp(body weight ÷ 70, 0.85, 1.15)

body-energy factor = (calorie factor + weight factor) ÷ 2

2) Working sodium target

working target = (profile base × body-energy factor) + sweat adjustment

3) Final personalized sodium target

final sodium target = clamp(working target, profile floor, profile cap)

4) Salt conversion

salt grams = sodium mg × 2.5 ÷ 1000

teaspoons of salt = salt grams ÷ 6

per meal sodium budget = final sodium target ÷ meals per day

If you leave direct sodium intake blank, the estimator uses calories, added salt, and restaurant or processed meals for a quick comparison.

How to Use This Calculator

Enter adult age, body weight, daily calories, and meals per day.
Select a nutrition profile that fits your planning style.
Choose the activity or climate option that best matches sweat loss.
Enter current sodium intake if you already track it.
Otherwise, add table salt grams and restaurant or processed meals for a quick estimate.
Press the calculate button to show the result above the form.
Review sodium target, salt grams, teaspoons, per meal budget, and the Plotly chart.
Use the CSV or PDF buttons to save the result for meal prep or coaching notes.

Frequently Asked Questions

1) What does this calculator estimate?

It estimates a daily sodium planning target, converts that target into salt grams and teaspoons, and compares it with entered or estimated intake.

2) Is sodium the same as salt?

No. Sodium is one part of salt. Table salt is sodium chloride, so salt weighs more than the sodium it contains.

3) Why does heavy sweating change the result?

People in hot conditions or long training sessions may lose more sodium through sweat. The calculator adds a planning adjustment rather than a medical prescription.

4) Why is there a profile selector?

Different meal-planning styles need different guardrails. The profile changes the base target, minimum floor, and ceiling before other adjustments are applied.

5) Can I use this if I have hypertension or kidney disease?

Use it carefully and follow your clinician’s instructions first. Medical conditions often need individualized sodium targets beyond a general planning calculator.

6) What happens if I leave current sodium blank?

The tool builds a quick comparison estimate from added table salt, restaurant or processed meals, and a simple baseline from daily calories.

7) How are teaspoons of salt calculated?

The calculator converts sodium to salt grams, then divides by six. That gives a practical teaspoon estimate for everyday kitchen planning.

8) Why track sodium per meal?

A meal budget helps spread salty foods across the day. It can make label reading, menu choices, and snack planning easier.