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Health & fitness

Protein needs calculator

Estimate daily protein needs from body weight.

Your result

Complete the fields and calculate.

Calculation method and formula

Body weight [kg] × protein needs per kg [g/kg]

Understand the inputs

Body weight
Unit: kg. Use a measured value or your own assumption.
protein needs per kg
Unit: g/kg. Use a measured value or your own assumption.

Assumptions and limitations

The selected factor or percentage is a calculation assumption, not a personal nutrition prescription. Health, training and circumstances can require different targets.

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

Worked example

Illustrative values. Replace them with your own inputs for your calculation.

Body weight
75 kg
protein needs per kg
1.6 g/kg
Example result120 g/day

The appropriate factor depends on goals, activity and personal circumstances.

Model revision: October 17, 2026 · How CleverCalc works

FAQ

Frequently asked questions

How does Protein needs calculator work?+

Body weight [kg] × protein needs per kg [g/kg]. The selected factor or percentage is a calculation assumption, not a personal nutrition prescription. Health, training and circumstances can require different targets.

What assumptions should I consider for this result?+

The selected factor or percentage is a calculation assumption, not a personal nutrition prescription. Health, training and circumstances can require different targets. The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

How accurate is the result?+

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation. Health values are general information, not a diagnosis or personal treatment recommendation.

Is this calculator free?+

Yes. Calculations and PDF export work without an account or registration.

What happens to my inputs?+

Calculations run in your browser. Results are saved locally only when you add them to My results; favourites and history are also local. Shared links contain your values. The currency tool requests the selected currencies from its rate provider without sending your amount.

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