Weight Converter — Free Online Tool
Convert between mg, g, kg, tonne, ounce, pound and stone in real time.
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About Weight Converter
The Weight Converter switches mass values between metric units like milligrams, grams, kilograms, and tonnes and imperial units like ounces, pounds, and stones. Type a value and the converted weight appears instantly with the formula shown, making everyday and technical conversions effortless.
It is handy for cooking, shipping and parcel weights, fitness and body weight tracking, and science class. All calculations run locally in your browser using precise standard factors, so results are instant and your data stays private.
How to Use Weight Converter
- Enter the weight you want to convert in the Value field.
- Choose the source unit, such as kilogram, in the From dropdown.
- Choose the target unit, such as pound, in the To dropdown.
- Read the converted weight instantly and copy it if needed.
Key Features
Convert between 7 weight units, metric and imperial
Live results that update as you type
Swap button to reverse the conversion direction
Shows the conversion formula for each result
Precise standard factors for accurate results
Runs fully client-side with one-click copy
Frequently Asked Questions
How many grams are in a pound?
One pound equals about 453.59 grams. To convert pounds to kilograms, multiply by 0.45359237.
How many ounces are in a pound?
One pound equals 16 ounces. One ounce is about 28.35 grams in the avoirdupois system used for everyday weights.
How many pounds are in a stone?
One stone equals 14 pounds, which is about 6.35 kilograms. The stone is commonly used for body weight in the UK and Ireland.
How do I convert kilograms to pounds?
Multiply the number of kilograms by 2.20462 to get pounds. For example, 70 kg equals about 154.32 pounds.