Health & Fitness
Calorie Calculator
Daily calorie needs for maintaining, losing or gaining weight.
How this calorie calculator works
The calorie calculator takes the numbers you enter and applies a standard formula for this kind of calculation, showing the result instantly with no page reload. Daily calorie needs for maintaining, losing or gaining weight.
Everything runs client-side in JavaScript, so your inputs never leave your device — there's no server, no account and no tracking involved in getting your answer.
Frequently asked questions
A deficit of around 300–500 calories a day is a commonly used, moderate starting point for gradual weight loss. Larger deficits should generally be discussed with a healthcare provider.