Converters
Weight Converter
Convert mg, g, kg, ounces, pounds, stone, and metric tons instantly.
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Version 1.0.0 · Last reviewed
Tool
Result
Live output from your inputs
Enter values and calculate to see results.
How it worksShow guideHide guide
Introduction
Convert between metric and imperial weights — milligrams through metric tons — using exact mass factors.
Formula
Convert mass by normalizing to kilograms, then scaling to the target unit.
- v — Numeric weight value
- f — Kilograms per unit for the selected unit
Step-by-step
- Enter the weight value.
- Choose the unit you are converting from.
- Choose the unit you want.
- Read the converted result and the kilogram equivalent.
Worked example
1 pound equals exactly 0.45359237 kilograms.
Use cases
- Convert body weight between kilograms and pounds
- Check shipping weights in ounces and grams
- Translate recipe or lab measurements
Frequently asked questions
Is a stone the UK stone?
Yes. One stone (st) is 14 pounds, or 6.35029318 kilograms.
What does “t” mean?
Metric ton (tonne) — 1000 kilograms. It is not the US short ton.
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