Weight Converter

Convert weight and mass instantly

Convert between kilograms, pounds, ounces, stone, and more — every unit updates live as you type.

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About this converter

Weight (mass) conversions use standard definitions (1 pound = 0.45359237 kg exactly). Results are calculated to full floating-point precision and displayed rounded for readability.

About Weight Converter

The Weight Converter converts between 7 common units, updating every value live as you type. Enter an amount, choose the unit you're starting from, and instantly see the equivalent in every other unit — each with its own copy button, plus a “Copy All” option for the full list. Weight (mass) conversions use standard definitions (1 pound = 0.45359237 kg exactly). Results are calculated to full floating-point precision and displayed rounded for readability. This tool runs entirely in your browser; no data is sent to any server.

Weight Converter