health calculator

Calorie Deficit Calculator

Estimate a daily calorie target and theoretical weekly weight change from TDEE and a chosen deficit.

Calculator results are produced by fixed formulas only. AI is not used for calculation outputs.

Results calculated from the default values.

Results

Results are up to date with the current inputs.

Daily calorie target1,700 calories/day
Weekly calorie deficit3,500 calories/week
Theoretical weekly change0.45 kg/week

How to interpret this estimate

Compare a daily calorie deficit with a maintenance estimate. Target calories equal estimated TDEE minus the chosen daily deficit.

When this result is useful

Use this calculator to compare how Estimated TDEE and Daily calorie deficit change Daily calorie target, Weekly calorie deficit, and Theoretical weekly change, and to review alternative values before using the estimate for planning.

Common limitations

The theoretical conversion uses approximately 7,700 calories per kilogram and does not predict exact body-weight change. Energy needs and weight change adapt over time; aggressive restriction can be unsafe. Review the units and assumptions before interpreting the result.

This calculator uses the selected inputs and the fixed formula behind the tool to produce an estimate. Review the units, assumptions, and result labels before using the output for planning.

Health results are screening or planning estimates only. They do not diagnose health status or replace advice from doctors, dietitians, or qualified healthcare professionals.

Read the medical disclaimer for more context.

Assumptions

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