Body Fat Calculator
Estimate your body fat percentage using simple tape measurements — free and instant.
No upload. No signup. No watermark. Your file never leaves your device.
Open Body Fat Calculator →
🔒 Runs in your browser
⚡ Instant conversion
✓ No signup
✓ Free, unlimited use
How it works
1
Open the Body Fat Calculator.
2
Enter your measurements (height, neck, waist, and for women, hip).
3
See your estimated body fat percentage.
Open the PDF to Word tool and select or drag in your PDF file.
2
Toolnova reads and converts the file locally in your browser — nothing is sent to a server.
3
Download your editable .docx file, ready to open in Word, Google Docs, or any compatible editor.
How does this body fat estimate work?
This tool uses the widely-used US Navy circumference method, which estimates body fat from simple tape measurements rather than specialized equipment.
Frequently asked questions
Is this body fat calculator free?
Yes, completely free with no signup.
How accurate is the US Navy method?
It's a reasonable estimate for most people but less precise than clinical methods like DEXA scans.
Is this medical advice?
No, it's a general estimate only — consult a professional for a precise assessment.