Weight Loss Calculator
Set your weight loss goal and pace. See how many weeks it will take, your required daily calorie deficit, and a monthly breakdown.
Time to reach goal
20.0 weeks
≈ 4.6 months · by January 2027
To lose
10.0 kg
Daily deficit
550 kcal
Weekly deficit
3850 kcal
Monthly Milestones
82.8 kg
−2.2 kg
80.7 kg
−4.3 kg
78.5 kg
−6.5 kg
76.3 kg
−8.7 kg
75.0 kg
−10.0 kg
1 kg of fat ≈ 7,700 kcal. Results are estimates — consult a healthcare professional before starting.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Weight Loss Calculator really free?
Yes. Weight Loss Calculator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Weight Loss Calculator upload my data?
No. Weight Loss Calculator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Weight Loss Calculator is ready to use on desktop or mobile.
Does Weight Loss Calculator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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