Mass and weight converter
Enter a plain decimal number and choose both mass units.
Convert common metric and imperial mass units.
About this tool
The mass and weight converter changes values between milligrams, grams, kilograms, metric tonnes, ounces, pounds, stone, short tons, and long tons. Use it for recipes, shipping estimates, or product specifications that use different metric and imperial units. Enter a decimal value and select the source and target units. The result keeps the unit name visible, which helps distinguish US short tons, imperial long tons, and metric tonnes.