Observed arrival · 2026-09-27
Body Numbers, with footnotes
Free browser and phone calculators estimate BMI, body fat, waist ratios, and daily energy.
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People comparing body-composition estimates
- Worth noticing
- Its example holds one man's measurements constant while comparing three estimates, including US Navy circumference and Relative Fat Mass.
Field notes
The body-fat comparison uses one set of measurements across three methods, including the US Navy circumference method and Relative Fat Mass. For the Navy estimate, the page lists height, neck, and waist as inputs, with hip measurement added for women. It also explains that the Navy equation was fitted on US Navy personnel, a limitation relevant to applying it to other builds.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue