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Calorie Deficit Calculator

Health
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Estimates the daily calorie reduction needed to lose a specific amount of weight over time.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Current Weight, Desired Weight, and Timeframe for Weight Loss in the units shown.

Step 2

Read Calories per Pound of Fat, Total Weight Loss, Weekly Weight Loss, and Daily Calorie Deficit Needed in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Lose 10 lbs in 8 weeks

Current Weight: 160 lbs; Desired Weight: 150 lbs; Timeframe for Weight Loss: 8 weeks

Calories per Pound of Fat: 3,500; Total Weight Loss: 10 lbs; Weekly Weight Loss: 1.25 lbs/week; Daily Calorie Deficit Needed: 625 calories

Lose 5 lbs in 4 weeks

Current Weight: 155 lbs; Desired Weight: 150 lbs; Timeframe for Weight Loss: 4 weeks

Calories per Pound of Fat: 3,500; Total Weight Loss: 5 lbs; Weekly Weight Loss: 1.25 lbs/week; Daily Calorie Deficit Needed: 625 calories

Lose 20 lbs in 16 weeks

Current Weight: 180 lbs; Desired Weight: 160 lbs; Timeframe for Weight Loss: 16 weeks

Calories per Pound of Fat: 3,500; Total Weight Loss: 20 lbs; Weekly Weight Loss: 1.25 lbs/week; Daily Calorie Deficit Needed: 625 calories

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Important

Use the result as an estimate and confirm any medical decisions with a qualified professional.