Protein Calculator Online

Your measurements

Choose your units, then enter the details you want to use.

Your estimate will appear here

Complete the relevant fields and select Calculate. Changes to your inputs clear the previous result.

Educational estimates, with their equations and assumptions. They do not diagnose a condition or prescribe a treatment.

Method, assumptions & sources

Who this is for

Adults aged 20 or older, outside pregnancy and breastfeeding; educational estimates for generally healthy adults.

How it works

Protein grams/day = weight(kg) × factor(g/kg/day). The generally healthy adult RDA reference factor is 0.8. A user-selected factor is a transparent arithmetic input, not a personalized recommendation.

Keep in mind

Needs differ with age, activity, pregnancy and illness; medical conditions can require specific advice.
The result does not assess total energy, food quality or individual adequacy.

Sources

Health Canada: adult dietary reference values and AMDR (opens in a new tab)