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.
9 calculators in this section
- Belt Size ConverterTrouser waist to belt size in inches and centimetres — and the fact everybody gets wrong: a belt size is the prong-to-middle-hole length, not a waist. The Anglo-American rule adds two inches; two German makers add nothing. Both are here, named.
- 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.
- Children’s Shoe Size ConverterUS, UK, EU and Japanese children's shoe sizes from the one thing that means anything — the foot length in millimetres. The US number restarts at 13½C → 1Y and the UK number at 13½ → 1, three published charts disagree about the US scale by up to a full size, and growing room is already inside every chart you will read. All of that is on this page.
- 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.
- Glove Size ConverterHand circumference to numeric glove size, S/M/L and the EN ISO 21420 protective-glove sizes — built on the identity the whole scale rests on: the numeric size IS your palm girth in inches. Which also means you can check any glove chart in five seconds, and one published chart fails.
- 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.
- Jeans and Waist Size ConverterW and L labels against EU, UK and Italian sizes, for men and women — and the honest part: the inch number on a pair of jeans is not the waist of the garment. Published tape tests put a 36-inch label at 37 to 41 inches. Both EU conventions are printed where the charts disagree.
- 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.