About this tool
This converter handles the four conversions people search for most. Length covers millimetres, centimetres, metres, kilometres, inches, feet, yards and miles, using 1 inch = 2.54 cm and 1 foot = 30.48 cm. Weight covers grams, kilograms, pounds and ounces, using 1 lb = 0.45359 kg, and the Korean 'geun' (600 g) appears in the Korean edition. Temperature converts between Celsius, Fahrenheit and Kelvin with F = C x 9/5 + 32, so 36.5 C is 97.7 F. Shoe sizes use a rough rule: US men's size = (Korean mm - 180) / 10 and US women's = men's + 1.5, so 250 mm is about US men 7 and US women 8.5, and a table lists common sizes. Brands and shoe types often differ by half a size, so check the brand's own chart and try shoes on when you can. Pick a category, enter a value and every other unit updates instantly. Everything is calculated in your browser.
How to use
- Choose a category: length, weight, temperature or shoe size.
- Type a value and pick the unit you are starting from.
- Read the converted values for all other units.
- For shoes, compare with the size chart and the brand's own chart.