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Body Fat Loss Calculator

Estimate how long to reach a target body fat. Free online calculator with instant results — no login needed.

Current Weight (kg) Current Body Fat (%) Target Body Fat (%)

Fat to Lose (kg)

What is the Body Fat Loss Calculator?

Estimate how long to reach a target body fat. Free online calculator with instant results — no login needed.

Enter your values above and the result updates instantly. A rough estimate.

Keeps lean mass constant while fat falls

Fat to Lose (kg)

Healthy body fat?

About 10–20% for men, 18–28% for women.