Mass Converter
Convert a mass between metric and imperial units — milligrams, grams, kilograms, tonnes, pounds, and ounces.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Enter an amount and choose a from/to unit to convert between metric and imperial mass units.
Your result
1,000
Converted value
AI explanation
Formula
Converted value = amount × (from-unit-to-kg factor) ÷ (to-unit-to-kg factor)Worked example
1 kilogram to grams
| Field | Value |
|---|---|
| Mass | 1 |
| From unit | kg |
| To unit | g |
| Converted value | 1000 |
Assumptions
- Mass and weight use identical conversion math for this calculator's purposes (this tool does not account for the physics distinction between mass and weight-as-a-force under gravity).
Frequently asked questions
What's the difference between mass and weight?
In physics, mass is the amount of matter in an object, while weight is the force of gravity acting on that mass. In everyday and this calculator's usage, though, the two are used interchangeably and share the same unit conversion factors.
What mass units does this calculator support?
Milligrams, grams, kilograms, tonnes (metric) and pounds, ounces (imperial/US customary).
Is there a version framed around everyday weight instead?
Yes — see the Weight Converter, which uses the identical conversion math with everyday-weight framing (like body weight or luggage weight).