Calories Calculator

Free calorie calculator. Calculate your daily calorie needs for losing, maintaining, or gaining weight based on your activity level.

How the Calories Calculator works

The calculator first estimates your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation, then multiplies it by an activity factor to get Total Daily Energy Expenditure (TDEE). Your goal adjusts TDEE up or down by a calorie surplus or deficit.

Formula

TDEE = BMR × Activity Factor

How to use the Calories Calculator

  1. 1The calories calculator is designed to be simple and fast.
  2. 2Enter your body metrics.
  3. 3Select your activity level.
  4. 4Choose a goal.
  5. 5Your result is shown immediately.

Examples

  • Maintenance 2,500, lose 0.5kg/wk: 2,000 kcal
  • Maintenance 2,000, gain muscle: 2,500 kcal

Benefits

  • Completely free with no signup required.
  • Runs entirely in your browser for instant results and privacy.
  • Works on mobile, tablet and desktop.
  • Results can be copied with one click.

Frequently Asked Questions

Is the calories calculator free to use?

Yes. The calories calculator is 100% free, with no signup, no watermark and no hidden limits.

Does the calories calculator store my data?

No. All calculations and processing happen locally in your browser. Nothing is uploaded to a server.

Does the calories calculator work on mobile?

Yes. The calories calculator is fully responsive and works on phones, tablets and desktop computers.

How many calories should I eat to lose weight?

Subtract 250-500 calories from your maintenance (TDEE) for a safe rate of 0.25-0.5 kg per week.

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