Free Calorie Calculator
Stop guessing how much to eat. Enter your stats, activity level and goal — lose, maintain or gain weight — and get a personalized daily calorie target, plus protein and water guidelines to support it.
How to Use the Calorie Calculator
- Enter your stats and activity level.
- Pick a goal: lose, maintain or gain weight.
- Click Calculate Calories for your daily calorie target.
Features
Combines the Mifflin-St Jeor equation with five activity multipliers and five goal presets from steady cutting to lean gaining. Also suggests daily protein and water intake based on your body weight.
Benefits & Use Cases
Gives dieters a concrete number to build meal plans around instead of a generic 2,000-calorie guess. Athletes use the gain presets to fuel muscle growth without excess fat.
Tips
Track intake honestly for two weeks and adjust if weight does not move as expected — calculators estimate, your body’s response confirms. Recalculate after significant weight changes.
Frequently Asked Questions
How many calories do I need per day?
It depends on your size, age, sex and activity — enter your details above for a personalized target rather than a generic number.
Is 1,200 calories a day safe?
Very low targets can be unsafe; most guidelines suggest not going below 1,200 (women) or 1,500 (men) daily without medical supervision.
How fast can I safely lose weight?
About 0.5 kg (1 lb) per week is widely considered sustainable, which needs roughly a 500 kcal daily deficit.
Do I need to count calories forever?
No — many people count for a few weeks to calibrate their portion intuition, then eat mindfully.
Related Tools
BMR Calculator
Estimate your Basal Metabolic Rate with the Mifflin-St Jeor equation using NToolHub’s free BMR calculator. Includes daily calorie needs by activity level.
Open tool →Calories Burned Calculator
Estimate calories burned for any workout with NToolHub’s free calories-burned calculator. MET-based estimates by activity, weight and duration.
Open tool →BMI Calculator
Calculate your Body Mass Index instantly with NToolHub’s free BMI calculator. Metric and imperial units with a visual category scale. No sign-up needed.
Open tool →Body Fat Calculator
Estimate body fat percentage with the U.S. Navy tape-measure method. Free body fat calculator for men and women, in cm or inches. Instant results.
Open tool →