Sodium Limit Calculator Formula

Understand the math behind the sodium limit calculator. Each variable explained with a worked example.

Use the Sodium Limit Calculator

Formulas Used

Recommended Limit

sodium_limit = limit_mg

Amount Over Limit

sodium_excess = max(current_sodium_mg - limit_mg, 0)

Equivalent Salt

sodium_tsp_salt = current_sodium_mg / 2300

Variables

VariableDescriptionDefault
ageAge(years)35
current_sodium_mgCurrent Daily Sodium(mg)3400
limit_mgDerived value= age <= 3 ? 1200 : (age <= 8 ? 1500 : (age <= 13 ? 1800 : 2300))calculated

How It Works

Sodium Intake Guidelines

The Dietary Guidelines for Americans recommend no more than 2,300 mg of sodium per day for adults. The average American consumes about 3,400 mg.

Sodium Limits by Age

AgeUpper Limit 1-3 years1,200 mg 4-8 years1,500 mg 9-13 years1,800 mg 14+ years2,300 mg

One teaspoon of table salt contains about 2,300 mg of sodium.

Worked Example

A 35-year-old consuming 3,400 mg of sodium daily.

age = 35current_sodium_mg = 3400
  1. 01Recommended limit (age 14+) = 2,300 mg
  2. 02Over limit = 3,400 - 2,300 = 1,100 mg
  3. 03Salt equivalent = 3,400 / 2,300 = 1.5 tsp

Frequently Asked Questions

How much sodium per day is safe?

The general recommendation is less than 2,300 mg for adults. Those with high blood pressure may benefit from staying under 1,500 mg.

What foods are highest in sodium?

Processed foods, restaurant meals, canned soups, deli meats, cheese, bread, and condiments are common high-sodium sources.

Does sodium cause high blood pressure?

Excess sodium can raise blood pressure in salt-sensitive individuals. Reducing sodium intake often helps lower blood pressure.

Ready to run the numbers?

Open Sodium Limit Calculator