Health & Fitness
Basic

Daily Protein Need

Baseline daily protein in grams per kg.

Formula

P=m×0.8P = m \times 0.8

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Variables

mBody mass (kg)

Example

70 kg ≈ 56 g

How it works

This formula gives a simple baseline for how much protein an average adult needs each day: about 0.8 grams of protein for every kilogram of body mass. It comes from nutrition guidelines that estimate the minimum amount needed to maintain normal body functions, repair tissues, and replace everyday protein losses. It is a starting point rather than a perfect target for everyone, because activity level, age, illness, pregnancy, and training goals can all change protein needs.

When to use it

Use this when you want a quick estimate of basic daily protein requirements for meal planning or checking a nutrition label total. It is especially useful for beginners who need a simple reference before adjusting for exercise or special health needs.

Worked example, step by step

Body mass, m = 62 kg Use the formula: P = m × 0.8 Substitute the value: P = 62 × 0.8 Calculate: P = 49.6 So the daily protein need is about 49.6 g, which can be rounded to 50 g per day.

Common mistakes to avoid

  • Using pounds instead of kilograms without converting first
  • Treating the result as an exact target for everyone
  • Forgetting that athletes or certain health conditions may need more protein

Did You Know?

Athletes may need up to twice the protein of sedentary adults to repair and build muscle.

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Reviewed & maintained by the FormulaWon editorial teamLast reviewed September 2026