What is it?
Protein supplies the amino acids your body uses to build and repair muscle and other tissues. Needs rise with training and during a calorie deficit.
This calculator gives a daily target and a practical range, and shows how much to eat per meal.
How it's calculated
Base ranges by activity range from 0.8–1.0 g/kg (sedentary) to 1.8–2.2 g/kg (extremely active).
The goal refines the target within the evidence-based range (e.g. ~2.0 g/kg for fat loss, ~1.8 g/kg for muscle gain), capped at 2.4 g/kg.
If you enter your height and your BMI is 30 or higher, we use an adjusted body weight to avoid overestimating needs.
How we calculate · Last reviewed: September 1, 2026
How to interpret your result
Aim to land within the range on most days. Spreading protein across 3–5 meals makes it easier.
Needs differ for people with kidney disease — follow medical guidance if that applies to you.