Weight Converter
Convert common weight and mass units instantly—mg, g, kg, metric tons, ounces, pounds, and stone.
Tip: unit changes recalculate instantly. Use copy to paste the latest formatted number.
What is a weight converter?
A weight (mass) converter helps you translate values between different measurement systems. This tool supports popular metric units like milligrams, grams, kilograms, and metric tons, as well as imperial units like ounces, pounds, and stone. It’s built for fast, accurate conversions directly in your browser—no signup required.
How to use
- Enter a number (for example, 2.5).
- Choose the unit you have (for example, kg).
- Choose the unit you need (for example, lb).
- Copy the result with one click.
Common use cases
- Shipping: convert package weight limits (kg ↔ lb).
- Fitness: interpret training plans and bodyweight goals.
- Cooking: convert ingredient weights between recipes.
FAQ
Weight vs mass — what’s the difference?
In everyday usage they’re often interchangeable. For unit conversions here, we convert mass units.
Are “lb” and “lbs” the same?
Yes. “lb” is the standard abbreviation; “lbs” is the plural form commonly used in writing.
Why does stone (st) appear?
Stone is still used in the UK for body weight. We include it for convenience.