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Calorie Calculator

Free calorie calculator to estimate daily calorie needs based on age, sex, height, weight, and activity level. Useful for maintenance, fat loss, or weight gain planning.

Instant result
Maintenance calories
2,548 calories/day
BMR1,644 calories/day

Calculator results are provided for planning and educational purposes. For taxes, legal decisions, lending, or medical advice, verify the numbers with an official source or qualified professional.

About this calculator

The calorie calculator estimates how many calories you may need per day to maintain your current weight. It can also help you plan a calorie target for gradual weight loss or weight gain when paired with your activity level.

How this calculator works

Most calorie calculators estimate basal energy needs first, then multiply by an activity factor to approximate total daily energy expenditure. The result is an estimate, not a medical prescription, because metabolism and daily movement vary from person to person.

How to use it

  1. Enter your sex, age, height, and weight.
  2. Choose the activity level that best matches your routine.
  3. Review the estimated daily calories for maintenance and use that as a starting point.
  4. Adjust gradually if your real-world results differ from the estimate.

Example

An active adult can compare calorie estimates for maintenance, then subtract or add calories modestly to plan for fat loss or weight gain over time.

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More ways to explore this calculator

Mega Calculators builds a content cluster around each high-value tool so users can open the live calculator, read the formula, follow a guide, or jump into example pages that match specific search intent.

Frequently asked questions

Is this the same as TDEE?

Very close. A calorie calculator often uses the same total daily energy expenditure concept, then frames the result in a more practical way for eating targets.

Why is this only an estimate?

Activity trackers, body composition, hormones, stress, and daily movement all affect actual calorie burn. Use the result as a starting point and adjust based on progress.

Can I use this for weight loss?

Yes, but it is best used for a moderate calorie deficit rather than an extreme cut. Medical guidance is appropriate if you have health concerns or a specialized nutrition goal.

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