Measurement Calculator
Choose a calculator, enter your numbers, and get your size on the next page.
Why use this calculator
Fast results
Enter your numbers once and get a clear size result on the next page, with no sign-up required.
Accurate formulas
Built on standard sizing methods used across the fitting industry for consistent, repeatable results.
Works in cm or inches
Switch units freely. The calculator converts your measurements automatically before computing your size.
No app needed
Runs directly in your browser on any device, from a phone at the store to a desktop at home.
How to use the calculator
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1
Pick a calculator
Select the Bra Size or Shoe Size tab above the input form.
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2
Take your measurements
Use a soft measuring tape for bust and underbust, or measure foot length from heel to longest toe.
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3
Enter your numbers
Type your measurement into each field and choose the correct unit, inches or centimeters.
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4
View your result
Submit the form to open a dedicated result page showing your calculated size.
Frequently asked questions
How do I measure my bust and underbust correctly?
Wrap a soft measuring tape around the fullest part of your bust for the bust measurement, and directly under your bust, along the band line, for the underbust measurement. Keep the tape level and snug, not tight.
How accurate is the shoe size result?
The shoe size result is calculated from your foot length using standard EU, US, and UK conversion formulas. Actual fit can still vary slightly between brands and shoe styles.
Can I use centimeters instead of inches?
Yes. Both calculators include a unit selector, so you can enter your measurements in centimeters or inches and the tool will convert them automatically.
Why do my results differ from a store's measurement?
Sizing charts vary between manufacturers, and body measurements can change slightly depending on posture and the tape's tension. Use the result as a reliable starting point.
Is my data stored anywhere?
No. Your measurements are sent to the result page to calculate your size and are not saved or stored.