Measure carefully
Stand relaxed; keep the tape snug but not tight.
Body Fat
Use the US Navy formula to estimate body fat from circumference measurements, no smart scale needed. You also get lean mass, fat mass and the range you fall into.
Open Body Fat (Navy) →How to use it
Enter the numbers
Enter height, neck, waist and weight; add hip for women. Weight only converts the percentage into fat and lean mass.
Read the range
Track the trend with the same method at the same time of day.
Manlin services
Make space for what matters
Use Manlin to reflect, plan and take your next step.
FAQ
Why is hip needed for women?
The Navy regression for women includes hip circumference; leaving it out adds a large error.
How does it compare with a smart scale?
Both have error. Watch the long-term trend from one method rather than a single reading.
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