Measure consistently
Use current measured body weight and a realistic calorie target. If distributing protein, equal meal arithmetic does not prove an ideal feeding pattern.
Protein allocation and reference comparison
Compare body-weight targets with calorie-derived ranges.
Calculate protein from grams per kilogram, compare it with the adult RDA baseline and AMDR, distribute it across meals and optionally relate it to estimated lean mass.
The calculation runs locally in this browser. Educational outputs do not replace professional assessment, diagnosis, treatment or emergency care.
Method and interpretation guide
Use the protein result as a transparent estimate
Use current measured body weight and a realistic calorie target. If distributing protein, equal meal arithmetic does not prove an ideal feeding pattern. The worksheet exposes its assumptions so the result can be checked instead of accepted as a black box.
Read the assumptions
The 0.8 g/kg RDA is a general adult reference, while activity presets are planning points inside published sports-nutrition ranges—not personal prescriptions or safety ceilings.
Escalate important decisions
A calculator cannot examine symptoms, medical history, medication effects or measurement quality. Use qualified professional guidance when the decision has health consequences.
Local calculation
Inputs are processed in this browser. No account or external calculator is required to produce the result.
False precision
Extra decimal places do not remove biological variation, input error or limits in the underlying population equation.
Scope
The 0.8 g/kg RDA is a general adult reference, while activity presets are planning points inside published sports-nutrition ranges—not personal prescriptions or safety ceilings.
Simple by design
Three steps to a clearer number.
Enter your details
Use realistic values in each field. You can change them anytime.
Calculate instantly
The formula runs locally, so there is no account or waiting time.
Use the result
Treat the answer as a practical estimate for your next decision.