Body Type Calculator
Last updated: June 2026 · Free · No sign-up required
Enter values above and click Calculate to see your result instantly.
Quick reference
| Body shape | Defining ratio |
|---|---|
| Hourglass | Bust ≈ hips, waist much smaller |
| Pear (triangle) | Hips > bust |
| Apple (round) | Bust/waist > hips |
| Rectangle | Bust, waist, hips similar |
| Inverted triangle | Bust/shoulders > hips |
monitor_weight A starting point, not a diagnosis
This calculator gives you the same number a clinician would compute by hand from your inputs. It is informational, never a substitute for a doctor. If a result surprises you, write it down and discuss it at your next appointment — that conversation is the goal, not a verdict from a webpage.
science Built from peer-reviewed formulas
Every health calculator on CalcaTools uses an equation from the WHO, NIH, ACOG, CDC, or a published peer-reviewed paper. The exact citation is in the "Formula & methodology" section. We re-check sources quarterly and update the page when guidance changes — the "Last reviewed" date is at the top.
volunteer_activism Designed for real people
Health calculations only help if you can actually use them. We use plain-English labels (no jargon), accept both metric and US units, and show what a "normal" range looks like alongside your result — so you understand what the number means, not just what it is.
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Your weight, height, age, pregnancy details, and any other health input never leave your browser. Calculations run client-side; nothing is logged or stored on our side. We don't want your medical data — we just want the formula to work for you.
Interpretation guide
| Waist-to-hip ratio | Reading |
|---|---|
| Below 0.75 | Curvier (pear / hourglass) |
| 0.75 – 0.80 | Balanced proportions |
| 0.80 – 0.85 | Straighter (rectangle) |
| Above 0.85 | More weight at the middle (apple) |
Formula & methodology
Formula: Compare bust, waist and hip measurements; key ratio = waist ÷ hips
How the result is calculated
Body shape is classified by comparing bust, waist and hip measurements. The waist-to-hip ratio and which of bust or hips is larger place you into one of the standard shapes — useful for clothing fit, not a medical assessment.
- Measure bust, waist (narrowest point) and hips (widest point) in the same unit.
- Compare bust to hips and compute waist ÷ hips.
- Match the pattern: balanced bust/hips with a small waist is an hourglass; larger hips a pear; larger bust an inverted triangle.
Example
Bust 36, waist 27, hips 38: bust ≈ hips and waist is much smaller, with a waist-to-hip ratio of 27/38 = 0.71 → hourglass shape.