Free Weight and Mass Converter Tool

Convert between 7 supported units including Kilogram, Gram, Milligram with adjustable precision and a documented conversion methodology.

What this converter covers

Convert mass between kilograms, grams, milligrams, metric tonnes, international avoirdupois pounds, ounces, and stone.

Worked example

100 Kilogram = 220.4622622 Pound

Important unit notes

•Despite the familiar label “weight,” this calculator converts units of mass.
•Pounds and ounces here use the international avoirdupois system, not troy measure.

Conversion factors are maintained against documented standards and definitions. Some displayed decimals are rounded for readability.How accuracy is handled·Sources

Popular Weight and Mass conversions

Kilogram to Pound Pound to Kilogram

Supported units

Kilogram

Gram

Milligram

Metric Ton

Pound

Ounce

Stone

About this converter

This tool converts through a consistent base-unit relationship defined for the weight and mass converter. It is designed for quick everyday use while preserving more internal precision than is normally useful to display.

Read the conversion methodology →

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