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Salt to sodium calculator

A UK label may list salt. A US label may list sodium. Compare the same amount, in the right units.

How this tool works

For food-label comparisons, salt in grams is approximately sodium in grams × 2.5. Convert milligrams to grams first. The serving multiplier scales both values to the portion you eat.

A worked example

400 mg sodium is about 1 g salt. If the label is for one serving and you eat two, the portion contains about 800 mg sodium or 2 g salt.

Before you use the result

This is a labeling conversion, not advice to add salt. It does not apply to potassium-based salt substitutes. Medical sodium limits, exercise-related losses, and fluid restrictions need individual guidance.

Is sodium the same as salt?

No. Sodium is one component of sodium chloride. The 2.5 multiplier is the conventional approximate label conversion.

Can I compare per-100-g labels?

Yes. Use 0.5 servings for 50 g, 1 for 100 g, or 1.5 for 150 g when the original label is per 100 g.

Sources

Leeds Teaching Hospitals: converting sodium and salt

NHS: salt in your diet

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How Alma Helps

Alma helps you log meals and track the nutrients that matter to your goals.