Weight Loss Calculator

Estimate weight loss from a daily calorie deficit.

Estimated fat loss 1.948

Estimated fat loss 4.295

Formula: loss = deficit × days ÷ 7700 kcal/kg

Step-by-step with your numbers:

1. Values used:

2. Daily calorie deficit = 500 kcal

3. Number of days = 30

5. Estimated fat loss = 1.948

6. Estimated fat loss = 4.295

Did we solve your problem today?

A sustained calorie deficit leads to fat loss over time.

The math behind it

About 7700 kcal equals 1 kg of body fat, so loss = deficit × days ÷ 7700.

500 kcal/day for 30 days → about 1.95 kg.

Is a bigger deficit better?

A moderate deficit (~500 kcal) preserves muscle and is more sustainable.