Weight Converter: The Complete Guide
Convert weight and mass instantly. Switch between kilograms, grams, tonnes, pounds, ounces, and stone, and see the conversion rate in both directions.
Who the Weight Converter is for
Anyone converting weight or mass between metric and imperial units.
How to use the Weight Converter
- Type your values into the fields above — pick your currency or units where the calculator offers them.
- Results update automatically as you type; there's no submit button and nothing is sent to a server.
- Adjust any input to compare scenarios, then copy the result with a single click.
How it works
Each unit has a fixed size in kilograms. The value is converted to kilograms, then to the target unit: result = value × (from-unit kg) ÷ (to-unit kg).
Features
- Metric & imperial
- 7 weight units
- Two-way conversion rate
- Instant result
Mass and weight units
Everyday 'weight' is really mass — measured in kilograms and grams in the metric system, and pounds, ounces, and stones in imperial use. One pound is about 0.4536 kilograms, and a stone is 14 pounds. This converter covers the common units for cooking, shipping, fitness, and trade.