Weight Converters

How heavy something is — pounds, kilograms, grams, ounces and stone.

Converters

Choose a converter

• Grams to Pounds g → lb
• Pounds to Ounces lb → oz
• Pounds to Kilograms lb → kg
• Kilograms to Pounds kg → lb
• Kilograms to Stone kg → st
• Ounces to Grams oz → g
• Pounds to Stone lb → st
• Stone to Pounds st → lb
• Stone to Kilograms st → kg
• Grams to Ounces g → oz
• Kilograms to Grams kg → g
• Pounds to Grams lb → g

Background

What weight units measure

Weight units measure how heavy something is. Metric units (grams, kilograms) and US customary units (ounces, pounds) measure the same property, so every conversion between them is a fixed number that never depends on what is being weighed.

Guide

Which weight converter do I need?

For body weight, it depends where you are: pounds in the US, stone and pounds in the UK and Ireland, kilograms almost everywhere else. The stone pages show how to read a decimal answer as stone and pounds, which is how the unit is actually spoken.

For cooking, grams and ounces are the kitchen-scale pair. Make sure the recipe means weight: an ounce of flour on a scale and a fluid ounce of milk in a jug are different units, and the fluid ounce belongs on the volume converters.

Precious metals use the troy ounce, about 31.1 g, which none of these pages convert. A gold or silver price quoted per ounce is almost certainly per troy ounce.

Reference

Weight units on this site

Every converter here calculates through kilograms, so a pair and its reverse always agree. The full list of factors and the standards behind them is on the methodology page.