Use this calorie deficit calculator to estimate how many calories you should eat to lose weight based on your age, body weight, height, activity level, and desired pace.
Your result estimates how many calories you can eat while still losing weight. It starts with your BMR, adjusts for activity to estimate TDEE, then subtracts calories based on your chosen pace.
This calorie deficit calculator gives a realistic starting point, not a perfect prediction. Real progress still depends on consistency, adherence, steps, sleep, and training.
Instead of guessing, you get a daily calorie intake estimate tied to your body size and activity level.
You can compare a slow, moderate, or aggressive deficit and choose a pace that actually fits your lifestyle.
Structured targets help reduce random dieting decisions and improve the odds of staying consistent.
A calorie deficit means eating fewer calories than your body burns. This energy gap is what drives weight loss over time.
A moderate deficit of around 500 calories per day is a common starting point because it balances progress with sustainability for many people.
Not always. Bigger deficits can produce faster short-term loss, but they are usually harder to maintain and may affect hunger, energy, and training performance.
Yes. The calculator accepts both kilograms and pounds and converts the value automatically.
Yes. Activity level affects your TDEE, which changes how many calories you can eat while still losing weight.
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Use CoachProAI to go beyond maintenance and deficit math. Get protein guidance, meal structure, progress adjustments, and smarter weekly coaching.
Disclaimer: This calorie deficit calculator provides educational estimates only and does not replace medical advice, diagnosis, or treatment.