Unit conversion
Weight Converter
Convert mass between kilograms, grams, pounds, ounces, stones, and clearly labeled tons.
Convert a value
Your values are processed in your browser and are not uploaded to ToolPixels. This tool does not save them.
Mass, not force
These units measure mass. They do not convert gravitational force in newtons. The ounce here is an avoirdupois ounce, not a troy ounce or fluid ounce.
A metric tonne is 1,000 kilograms. US short tons and imperial long tons have different masses. For mixed stones and pounds, first express the amount in one decimal unit.
Example
1 pound = 0.45359237 kilograms.
Precision and input limits
Results use browser floating-point arithmetic and are rounded to your selected number of significant digits, not decimal places. Small or large results may use scientific notation. This is not an arbitrary-precision calculator.
Enter zero or a number with magnitude from 1e-100 to 1e100. Signed values are supported for mathematical conversions. Swap units exchanges the unit choices without changing your input. Editing an input clears the previous result.