Calculator

Protein Calculator

Multiply body weight by a published gram-per-kilogram rate.

Your inputs

kg

Protein

128 g

Weight times the gram rate you chose.

Formula

The adult RDA often cited in the United States is 0.8 g per kg. A common midpoint of the ISSN training range of about 1.4 to 2.0 g per kg is 1.6:

Grams = kilograms × chosen rate

The macro page splits calories. This page only answers protein grams from body weight.

Assumptions

  • The rate is a planning figure, not a prescribed intake.
  • Weight is body weight, not lean mass.

Worked example

80 kg at 1.6 g/kg is 128 g of protein.

Input definitions

Grams per kilogram
Either the 0.8 g/kg adult RDA or the 1.6 g/kg training midpoint.

Limitations

This is an informational estimate for adults. It is not a diagnosis, a diet plan, or a training prescription. Pregnancy, illness, and medication can change what is appropriate.

Questions

Which rate should an athlete use?

This page does not choose for you. The 1.6 figure is a midpoint of a published training range, not a requirement.

Does this include calories?

No. Protein grams here come only from body weight and the rate.

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