CalcNest AI

Weight Loss Calculator

Estimate how long it will take to reach your goal weight based on a daily calorie deficit. A safe rate is 0.5–1 kg per week.

About Weight Loss Calculator

Estimate how long it will take to reach your goal weight based on a daily calorie deficit. A safe rate is 0.5–1 kg per week.

Formula

Days = (kg × 7,700 cal/kg) / Daily Deficit

Example

85 kg → 75 kg at 500 cal/day deficit ≈ 22 weeks.

How to Use

Enter your values in the fields above and click "Calculate" to get instant results. All calculations happen in your browser — nothing is sent to any server.

Frequently Asked Questions

What is Weight Loss Calculator?
Estimate how long it will take to reach your goal weight based on a daily calorie deficit. A safe rate is 0.5–1 kg per week.

What formula does this use?
This calculator uses: Days = (kg × 7,700 cal/kg) / Daily Deficit

Is this calculator free?
Yes! All calculators on CalcNest AI are 100% free with no account required.

Is my data safe?
Absolutely. All calculations run locally in your browser. We never store or transmit your input data.

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