Calorie Deficit Calculator

Formula

maintenance − intake

Worked example

2,500 maintenance, 2,000 intake — 500 kcal/day

Quick answer

What does the Calorie Deficit Calculator do?

Calculate daily calorie deficit from estimated maintenance and planned intake.

What is the Calorie Deficit Calculator?

Calculate daily calorie deficit from estimated maintenance and planned intake. Use it when you have the required inputs and want a deterministic, repeatable result with the calculation method visible.

How to use this calculator

Enter the values requested by the tool, keep units and time periods consistent, resolve any validation message, calculate, then review the primary answer together with the displayed formula and supporting values.

Formula and method

This calculator uses the deterministic formula maintenance − intake. Enter the required values, then review the displayed substitution and result breakdown to verify the calculation.

Worked example

2,500 maintenance, 2,000 intake 500 kcal/day

Common mistakes to avoid

Check units, decimal points, percentages, signs, date/time order, selector choices, and rounding. For important decisions, verify the result against an independent source or qualified professional when appropriate.