Weight/Mass Converter
Convert between kilograms, pounds, ounces, grams, stones, and tonnes.
Examples
| Input | Result |
|---|---|
| 100 pounds | 45.3592 kg |
| 75 kilograms | 165.347 pounds |
| 12 stones | 76.2035 kg |
About this tool
Convert between metric weight units (tonnes, kilograms, grams, milligrams) and imperial units (pounds, ounces, stones). The converter handles the math in real time as you type, so you can quickly check weights for cooking, shipping, fitness tracking, or anything else.
The conversions here use the international avoirdupois pound, defined as exactly 0.45359237 kg. This is the pound used in everyday commerce in the US, UK, and other countries. If you need troy ounces (used for precious metals), note that a troy ounce is about 31.1 grams, not the 28.35 grams of a standard avoirdupois ounce.
Frequently asked questions
How many pounds are in a kilogram?
One kilogram equals approximately 2.20462 pounds. To convert kg to lbs, multiply by 2.20462.
What is a stone in pounds?
One stone is exactly 14 pounds (about 6.35 kg). Stones are commonly used for body weight in the UK and Ireland.
How do I convert ounces to grams?
Multiply the ounce value by 28.3495. One ounce equals approximately 28.35 grams.