About the Weight Loss Calculator
Find the daily calorie deficit you need to reach a goal weight. This tool is free, works in your browser and needs no sign-up.
How to use the Weight Loss Calculator
Enter your weight now, your goal weight and the number of weeks you want to take.
Formula used
Daily deficit = kg to lose × 7,700 calories ÷ (weeks × 7).
Example
With Current weight (kg) 80, Goal weight (kg) 70, Weeks 20, the calculator shows: To lose = 10.0 kg; Per week = 0.50 kg; Daily calorie deficit = 550 kcal.
Frequently asked questions
Is the Weight Loss Calculator free to use?
Yes. It is completely free and you can use it as many times as you like.
How accurate is the Weight Loss Calculator?
The calculator uses standard formulas, so the maths is exact. Real life results can differ because of fees, taxes, rounding or personal factors, so treat the answer as an estimate.
Do you store the numbers I enter?
No. All calculations run in your browser. The values you type are not sent to our server.
Disclaimer: results are estimates for information only. They are not financial, medical or professional advice.