Easily convert between different units of mass and weight with our free Weight Converters. Whether you are following a recipe, tracking your body weight, or calculating shipping costs, these tools make it simple.
Browse the list below to instantly convert between Metric units (Kilograms, Grams) and Imperial units (Pounds, Ounces, Stones).
Master Weight Converter
Weight & Mass Conversion Directory
Comprehensive conversion guides for laboratory, commercial, and historical weight measurement systems.
Metric (SI) Units
- Milligrams to Grams
- Grams to Kilograms
- Kilograms to Metric Tons
- Micrograms to Milligrams
- Grams to Centigrams
- Kilograms to Grams
Imperial / US Units
- Ounces to Pounds
- Pounds to Ounces
- Pounds to Stones
- Stones to Kilograms
- US Tons to Pounds
- Pounds to Kilograms
Bulk & Tonnage
- Metric Tons to US Tons
- Metric Tons to UK Tons
- Short Tons to Long Tons
- Kilograms to US Tons
- Pounds to Metric Tons
- UK Tons to Kilograms
Specialty Weights
- Grams to Carats
- Carats to Milligrams
- Ounces to Troy Ounces
- Troy Ounces to Grams
- Pounds to Slugs
- Grams to Troy Pounds
Frequently Asked Questions
Scientifically, mass is the amount of matter in an object, while weight is the force of gravity acting on that mass. However, in everyday commerce and on this converter, the terms are used interchangeably using Earth’s standard gravity.
A quick approximation is to multiply the kilograms by 2.205. For example, 10kg is approximately 22.05 lbs.
The Stone (st) is a British unit of weight equal to 14 pounds. It is still commonly used in the UK and Ireland for expressing human body weight.
One gram is equal to exactly 5 carats. A carat is a unit of mass used for measuring gemstones and pearls, equal to 200 milligrams.