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Food Serving Converter

Convert label calories and nutrients to the amount you actually eat. Use per-serving, per-100 g, or whole-package values. Free, no signup.

Enter the nutrients for one label serving. Leave unavailable values blank; enter 0 only when the label says zero.

Match the label's preparation state, such as dry, drained, or cooked.

Examples are fictional. Free, no signup. Entered values are not included in tool analytics.

Saved on this device

No account needed. Saves stay in this browser, do not sync, and are erased if you clear site data. Anyone using this browser can open them.

Calculate, then give the result a name to save it here.

How it works

Each entered nutrient is multiplied by the amount eaten divided by the label weight. Per-100 g mode uses 100 g as the denominator; whole-package mode uses the full food weight and full-package nutrients.

Worked example

A fictional label lists 180 kcal per 40 g. Eating 65 g gives 180 × 65 ÷ 40 = 292.5 kcal. The same multiplier, 1.625, applies to each supplied nutrient.

Example values are illustrative, not nutrition data for a specific product.

Getting a useful result

All weights are in grams. Do not enter milliliters as grams without a measured or product-specific conversion. Label rounding carries through to results. A label serving describes the product; it is not a recommendation of how much to eat.

Use the preparation state and serving basis shown on your label. The FDA Nutrition Facts guide explains how label nutrients relate to servings. Our calculator methodology documents the arithmetic and limitations.

Do I need an account?

No. Calculate, compare, copy, and print without signing up. Optional named saves stay in this browser on this device. They do not sync or have account recovery. Clearing site data removes them. Entered foods, names, and nutrition values are not sent in tool usage events.

Keep planning

Method: arithmetic using your supplied values. Estimates are not measurements or dietary prescriptions. Prepared by the Kalo editorial team. Editorial policy · Report a problem.