Free Online Tool

Body Fat Calculator & Fat Mass Estimator

Calculate body fat %, lean mass, fat mass using Navy, BMI, Jackson-Pollock methods.

✓ 100% Free ✓ No Sign-up ✓ Real-time Data ✓ Better than calculator.net
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💪 Body Fat & Lean Mass Calculator

💪 Level Up Your Fitness

Trusted by athletes and fitness enthusiasts worldwide

🤩 Did You Know?

Fascinating facts about body fat calculator & fat mass estimator

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Elite marathon runners typically have 5-11% body fat.

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Michael Phelps reportedly had only 8% body fat at his peak.

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Essential fat (needed for survival) is 3-5% for men and 10-13% for women.

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Brown fat actually burns calories to generate heat — unlike white fat.

🎯 Quick Quiz

What body fat % is considered 'athletic' for men?

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📰 Latest News

Fresh headlines on body fat calculator & fat mass estimator

BBC News Wed, 13 May 2026

Posh sandwich has more salt than nearly five cheeseburgers

Action on Salt & Sugar said people should not be exposed to a "hidden health risk every time they buy lunch".

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BBC News Wed, 13 May 2026

MPs call for sunbed advertising ban to help prevent skin cancer

A report by a cross-party group of MPs has found the majority of skin cancer cases are preventable.

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BBC News Wed, 13 May 2026

How are countries responding to hantavirus?

The UK, US and EU are asking all citizens returning home from the virus-hit MV Hondius to self-isolate for about six weeks.

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BBC News Wed, 13 May 2026

Sydney dentist's patients warned of viruses including HIV

Authorities urged patients to get tested due to "poor infection control practices" at the Australian clinic.

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