Weight converters

Kilograms, pounds, ounces, grams and stone. Every tool below is free, works instantly in your browser and explains the formula behind the result.

Weight conversions are needed for body weight, recipes, shipping and the gym. The international pound is defined as exactly 0.45359237 kilograms, an ounce is 1/16 of a pound and a stone is 14 pounds, so all of these tools give exact results. Each page also explains how to estimate in your head and lists the most common conversions.