Weight & Mass Converter
Convert weight and mass between grams, kilograms, pounds, ounces and more.
Results update as you type.
About this calculator
A weight converter changes a mass between metric units (milligram, gram, kilogram, metric ton) and imperial/US units (ounce, pound, stone, US ton, imperial ton). Every value is converted through kilograms as the base unit so any pair works in both directions.
Frequently asked questions
How many pounds are in a kilogram?
One kilogram equals about 2.20462 pounds, and one pound is 0.45359237 kilograms. That pound-to-kilogram figure is an exact international definition.
How many ounces are in a pound?
There are exactly 16 ounces in a pound. One ounce is about 28.35 grams, so a pound is roughly 453.6 grams.
What is a stone in kilograms?
One stone equals 14 pounds, or about 6.35 kilograms. The stone is still commonly used for body weight in the UK and Ireland.
Results are estimates for general guidance only, not financial, medical or tax advice.