How to use it
Fill in the fields - the answer updates as you type. Find how much protein, calories, fat, carbs, fibre and water you need each day from your age, weight, height, activity and goal.
Free and private
The calculation runs in your browser. Nothing you type is sent or stored, and there is no limit.
Questions
How much protein do I need a day?
Most adults need 0.8-1.0 g per kg of body weight; active people 1.2-1.6 g/kg; people losing fat or building muscle 1.6-2.2 g/kg.
Is too much protein harmful?
Up to about 2 g/kg is considered safe for healthy adults. People with kidney disease should follow medical advice.
Is it free?
Yes - free and unlimited, with no sign-up.