Protein Calculator

Protein supplies amino acids used in body tissues, enzymes and many other proteins. A weight-based calculation is useful for understanding a stated reference or testing a chosen scenario, but multiplication alone cannot choose an appropriate intake.

The result here is weight in kilograms × your entered coefficient in grams per kilogram. The coefficient remains visible with the result and is not assigned from an activity, age, sex, goal, illness or recovery matrix.

1. Enter weight and select kilograms or pounds.
2. Enter the g/kg coefficient you want to examine.
3. Multiply kilograms by that coefficient to obtain protein grams.

Example: 70 kg × 1.6 g/kg = 112 g. This is a user-chosen arithmetic example, not a recommendation to consume 112 g.

Pounds are converted using 1 lb = 0.45359237 kg, as defined in NIST SI pound definition (footnote 22). Checked September 30, 2026.

EFSA’s 2012 protein reference gives an adult Population Reference Intake of 0.83 g/kg/day, including older adults, and separate child and life-stage values. A PRI is a population reference, not a personal optimum or maximum. The source was published February 9, 2012 and checked September 30, 2026; its age is disclosed rather than described as new guidance.

ISSN’s 2017 protein-and-exercise position stand discusses healthy exercising individuals and a daily 1.4–2.0 g/kg range for most exercising people. This distinct population does not justify an automatic recommendation for every activity, goal or illness. Published June 20, 2017; checked September 30, 2026.

Protein-containing foods include meat, fish, eggs, dairy, soy foods, beans, lentils, nuts and seeds. Most also provide other nutrients, so they are not interchangeable solely by protein grams.

Use the actual product label or a food-composition record matching the preparation and quantity. Raw and cooked weights, drained portions, cup sizes and brands can change the grams recorded. This guide does not assign precise values to unspecified foods.

Meal allocation is separate from choosing a daily coefficient. An entered 112 g budget divided equally among four meals is 28 g per meal; that equality is arithmetic and does not establish optimal timing or a required per-meal dose.

The ISSN source discusses timing for healthy exercising people. This form collects no training programme or diet record and does not determine a personal schedule, recovery plan or supplement requirement.

Age, growth, pregnancy, lactation and health status affect which population reference is relevant. Neither cited adult reference supplies a blanket illness, surgery or recovery coefficient. The calculator therefore makes no automatic adjustment for those circumstances.

Health Canada’s macronutrient table lists life-stage protein references and notes that apparently healthy population values may require individual tailoring. It also does not support a separate requirement for vegetarians consuming complementary plant-protein mixtures. Checked September 30, 2026.

A finite result is not a safe upper limit. This tool does not diagnose deficiency, prescribe treatment, or certify intake in kidney disease or other medical conditions.