Size charts and converters for every country
Enter a size in one system and read it in all the others. Neutral, cross-brand tables for rings, shoes, bras, hats and clothing, all running in your browser.
Looking for bra, clothing, glove, belt or sock sizes? Pick a category below for the full chart and calculator.
Browse size charts
Ring size chart
US, UK, EU and ISO ring sizes with diameter, plus a print-at-scale ring sizer.
Shoe size chart
US, UK, EU and cm for men, women and kids, with country converters.
Bra size chart
Band and cup conversion across US, UK, EU, FR and IT, plus a size calculator.
Hat size chart
Head circumference to US, UK, EU and letter sizes, including fitted caps.
Clothing size chart
Men's, women's and youth apparel across US, UK, EU, IT and FR.
Glove size chart
Hand circumference to US, EU and letter glove sizes.
Belt size chart
Waist to belt length in inches and cm, with EU belt numbers.
Sock size chart
Sock size to US, EU shoe ranges and foot length.
Why SizeCharts
Brand size guides only show one label for one product. SizeCharts is the neutral reference: every system in one place, anchored to the real physical measurement behind the size, so you can shop across borders and across brands with confidence.
- Every country and standard in a single table.
- Anchored to diameter, foot length or circumference, not guesswork.
- Printable charts, including a print-at-scale ring sizer.
- A free JSON API and an embeddable converter for developers.
Common questions
How do I convert my size to another country?
Pick a category above, enter your size in the system you know, and read the equivalent in every other country instantly. Ring, shoe and hat convert on the homepage, and each category page has a full chart plus a converter.
Are these size charts accurate?
Every table is anchored to a physical measurement, such as foot length in centimetres or ring diameter in millimetres, and is checked against published international sizing standards. Fit still varies by brand, so treat the charts as a reliable starting point.
Is SizeCharts free and private?
Yes. There is no sign up, no tracking and no upload. All conversions run in your browser using static tables built into the page, so nothing you type ever leaves your device.
Can I print these charts?
Yes. Every category has a printable chart, including a print-at-scale ring sizer. Print at one hundred percent scale so measured tools like the ring sizer and foot ruler stay true.