Calorie Calculator

Use the free Calorie Calculator to estimate your daily calorie needs to maintain, lose, or gain weight. Enter your values below and get an instant, accurate result.

Calorie Calculator

Free & Instant

The Calorie Calculator helps you estimate your daily calorie needs to maintain, lose, or gain weight. Simply fill in the fields above and click Calculate to get an instant result.

This calculator is part of Calculate Wiki’s Health & Fitness Calculators collection.

What You’ll Need

  • Sex
  • Age (years)
  • Height (cm)
  • Weight (kg)
  • Activity Level

Formula Used

TDEE = BMR × Activity Multiplier (BMR calculated via the Mifflin-St Jeor equation)

Example Calculation

Using example inputs — Sex = male; Age = 30 years; Height = 175 cm; Weight = 75 kg; Activity Level = 1.55 — the Calorie Calculator returns:

ValueResult
Maintain weight2,633 cal
Lose weight (~1 lb/week)2,133 cal
Gain weight (~1 lb/week)3,133 cal

2,633 calories/day to maintain. BMR: 1,699 cal/day.

Helpful Information

Results from the Calorie Calculator are estimates based on standard formulas used in the health & fitness calculators field. For projects with significant cost, health, or safety implications, consider verifying results with a qualified professional.

Frequently Asked Questions

Is the Calorie Calculator free to use?
Yes — the Calorie Calculator on Calculate Wiki is completely free, with no sign-up required.
How accurate is the Calorie Calculator?
The Calorie Calculator uses a standard, well-documented formula from the health & fitness calculators field. Results are for informational and planning purposes.
Can I use this on my phone?
Yes, this calculator is fully mobile-friendly and works on any modern browser.
What does the result mean?
For the example values shown above, the result is 2,633 calories/day to maintain. BMR: 1,699 cal/day.

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