Bust-Waist-Hips Calculator
Use this quick tool to format your measurements, calculate key ratios, and get a general body-shape estimate.
Tip: Measure with a soft tape held level and snug, not tight.
Educational tool only. It does not diagnose health conditions.
What this bust waist hips calculator does
A bust waist hips calculator helps you organize your body measurements and turn them into useful numbers. Most people know their basic measurements, but ratios often tell a clearer story than raw values alone. This calculator gives you:
- Your formatted B-W-H measurement set (for example, 36-28-38).
- Waist-to-hip ratio (WHR), a commonly used health and fitness metric.
- Waist-to-bust ratio and bust-to-hip ratio for fit and proportion insights.
- A simple body-shape estimate based on measurement relationships.
How to measure correctly
The most important part of any calculator is accurate input. Even a small measuring error can change your ratio results and shape category.
1) Bust
Measure around the fullest part of your bust with the tape parallel to the floor. Keep your arms relaxed and avoid pulling the tape too tight.
2) Waist
Measure around your natural waist, usually the narrowest part of your torso, often above your belly button. Breathe normally and avoid “sucking in.”
3) Hips
Measure around the fullest part of your hips and glutes. Stand with feet together and keep the tape level.
Understanding your results
Waist-to-hip ratio (WHR)
WHR is calculated as waist ÷ hips. Lower values generally indicate a smaller waist relative to hip circumference. Many clinicians and coaches use WHR as one screening marker for fat distribution.
Waist-to-bust ratio
This ratio is waist ÷ bust. It can be useful for clothing fit, tailoring decisions, and personal tracking over time.
Bust-to-hip ratio
This ratio is bust ÷ hips. A value close to 1.00 indicates a relatively balanced top and bottom. Values above or below 1.00 suggest one area is proportionally larger.
Body-shape categories (general estimate)
Shape labels are only broad descriptors—not judgments. They can help with shopping, styling, and fit expectations.
- Hourglass: Bust and hips are similar, with a clearly smaller waist.
- Pear (Triangle): Hips are noticeably larger than bust.
- Inverted Triangle: Bust is noticeably larger than hips.
- Apple (Round): Waist is proportionally fuller than bust and hips.
- Rectangle: Bust and hips are similar, with less waist definition.
Why tracking over time matters more than a single reading
One measurement day is a snapshot. Weekly or monthly trend tracking is usually more useful. Hydration, digestion, cycle timing, clothing layers, and tape placement can all influence one-time readings.
If you measure consistently (same tape, same time of day, similar conditions), you can spot real changes and make better fitness or clothing decisions.
Frequently asked questions
Should I use inches or centimeters?
Either works. Ratios are unit-independent as long as all measurements use the same unit.
Is body shape fixed forever?
Not necessarily. Training, muscle gain, weight change, age, and hormonal factors can shift measurements over time.
Can this calculator replace medical advice?
No. It is a practical self-tracking tool. For health concerns, speak with a qualified medical professional.