Weight Mass Converter
Convert kilograms, pounds, ounces, and stone.
Weight and mass, converted
Everyday weight moves between metric and imperial: one kilogram is about 2.205 pounds, and a stone is 14 pounds. This converts between kilograms, grams, pounds, ounces, and stone.
It is the everyday metric-imperial bridge — reading a body weight in stone or pounds versus kilograms, or a shipping weight in ounces versus grams — without mental arithmetic.
Mass vs weight
Strictly these are mass units; weight varies with gravity, though on Earth the distinction rarely matters. Your values are converted locally and never uploaded.
Frequently Asked Questions
How does the weight mass converter work?
Values are normalized to kilograms, then converted to the selected output unit. A 25 pound package is 11.3398 kilograms using the exact international pound definition.
When should I use this converter?
It is handy for shipping labels, recipes by weight, gym tracking, and product listings that need both US and metric units.
What is the main limitation?
Mass and weight are treated as interchangeable for everyday conversion; scientific force calculations need different units.
Is this converter private?
Yes. The conversion runs entirely in your browser, so your values are not uploaded, stored, or sent to a server.
More free browser utilities for conversion, formatting, and technical cleanup.