Daily Protein Needs Calculator
Calculate how much protein you need per day based on body weight and activity level.
How to use this tool
- Enter body weight and activity / goal in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your min protein and the full breakdown beneath it.
Most adults need 0.8–2.0 g of protein per kg of body weight per day, depending on activity level. Athletes and strength trainers need more.
Frequently asked questions
- How much protein do I need per day?
- The minimum RDA is 0.8 g/kg/day. Active people and those building muscle typically benefit from 1.2–2.0 g/kg/day. Most high-quality research suggests 1.6 g/kg is sufficient to maximise muscle protein synthesis.
- Does it matter when I eat protein?
- Spreading protein across 3–4 meals of 25–40 g each maximises muscle protein synthesis compared to eating it all at once.