Health & Fitness
Calorie Calculator - Daily Calorie Needs
Calculate daily calorie needs for maintenance, weight loss, or gain.
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Frequently asked questions
What is maintenance calories?
It is the estimated number of calories to maintain your current weight.
How does activity level affect calories?
Higher activity increases calorie needs to maintain weight.
Is a 500 calorie deficit safe?
It is a common starting point, but individual needs vary.
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About this tool
This Calorie Calculator turns your inputs into practical results. Provide Weight, Height, and Age to calculate Weight loss target and Weight gain target.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.