Vegan Protein Combination Calculator

Work out vegan protein combination instantly with clear inputs, formula shown and shareable results.

About Vegan Protein Combination Calculator

Totals plant protein sources, applies a digestibility discount and checks whether legumes and grains are combined to complement each other's limiting amino acids.

Formula

Complementary proteins

Legumes are limited in methionine and grains in lysine, so combining them across the day gives a complete profile; plant protein digestibility is roughly 10% lower than animal protein

Worked example

With the default values below, Vegan Protein Combination Calculator returns Total plant protein of 26.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Protein from legumesaccepts 0–200 g: 12 g
Protein from grainsaccepts 0–200 g: 8 g
Protein from nuts, seeds and vegetablesaccepts 0–200 g: 6 g
Daily protein targetaccepts 20–300 g: 60 g

Results

Total plant protein: 26.00 g
Protein adjusted for digestibility: 23.40 g
Share of the daily target: 43.33%
Amino acid complementarity: Legumes and grains together supply a complete amino acid profile

Step by step

1Values used
2Complementary proteins
3Total plant protein= 26.00 g
4Protein adjusted for digestibility= 23.40 g
5Share of the daily target= 43.33
6Amino acid complementarity= Legumes and grains together supply a complete amino acid profile

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

Frequently Asked Questions

Must complementary proteins be eaten together?

No. The amino acid pool persists for hours, so combining them across the day is sufficient.

Do vegans need more protein?

Slightly, typically 10 to 15% more, because of lower digestibility and lower leucine density.