Clothing, Shoe & Body Sizing
Every clothing, shoe & body sizing calculator on CalcEngines — unit converters, derived indices and interpretive tools, each with its formula, a worked example and the reference intervals it is judged against.
5 calculators in this section
- Bra Size ConverterUK, US, EU, French, Italian, Japanese and Australian bra sizes, both parts converted separately — because the band converts by arithmetic and the cup does not. Above a D the letter sequences diverge, so a UK 34F is not a US 34F, and this page says which is which.
- Clothing Size ConverterUK, US, EU, French, Italian, Japanese and Australian clothing sizes, for women and men, converted through the one number that means anything: the bust or chest circumference in centimetres. Every national size on this page is that measurement halved, with a different constant taken off — which is the whole trick, and why the charts disagree at the ends.
- Hat Size ConverterHead circumference in centimetres and inches, the US fitted scale, the UK scale, the EU number and S/M/L — all from one measurement. The US size is your head's DIAMETER in inches, which is where the odd numbers come from, and the UK scale sits an eighth of an inch below it.
- Ring Size ConverterUS and Canadian numeric sizes, UK and Australian letters, EU and ISO 8653 circumference sizes, Japanese numbers and inside diameter in millimetres — all converted through the quantity that actually fits the finger, the inside circumference in millimetres. With how to measure, and the warnings that matter.
- Shoe Size ConverterUS, UK, EU, Japanese and centimetre shoe sizes, for men, women and children, converted through the one quantity that means anything physical: the length of your foot in millimetres, which is what ISO 9407 Mondopoint sizing actually is. Every other scale is a convention, and makers differ by up to a full size.