Weight Converter: Convert Common Units in Your Browser
The Weight Converter changes a measurement from one unit to another, including grams, kilograms, ounces, pounds, stones, tons, troy ounces, and carats. Choose the source and target units to see the converted figure, or convert a set of values at once. The avoirdupois pound is exactly 0.45359237 kg, while troy ounces and carats relate to the exact grain.
The Weight Converter helps you convert everyday and commercial weight measurements between units such as grams, kilograms, ounces, pounds, stones, tons, troy ounces, and carats. Choose the unit your value is currently in and the unit you need, then use the converted figure for a quick check or to work with values expressed in another system.
The conversion relationships reflect the definitions described for these units. An avoirdupois pound is exactly 0.45359237 kg, and the ounce, stone, and US and UK tons follow from that pound. The troy ounce, used for precious metals, and the carat, used for gemstones, are defined via the exact grain of 64.79891 mg. For physics units such as the slug, atomic mass unit, or eV/c², use the Mass converter instead.
Different weight units are useful in different contexts, so converting helps when a measurement and its intended audience use different conventions. You can check a value in the unit people expect to see, or convert a set of values rather than rounding each one by hand. Select the source and target units to make the conversion you need.
The Weight Converter runs entirely in your browser. Your input is processed on your device and is not uploaded, stored, or sent to a server. It works offline once the page has loaded, so you can continue converting without a connection.
This tool is useful for developers, DevOps engineers, and anyone checking measurements in product data, documentation, or everyday work. Whether you need to compare pounds with kilograms, handle troy-ounce figures, or check a carat measurement, the converter provides a direct way to work between supported units.
Step 1: Enter the weight value you want to convert. You can use the converter for a single measurement or a set of values.
Step 2: Choose the source unit, such as grams, pounds, or troy ounces.
Step 3: Choose the target unit you need, such as kilograms, ounces, or carats.
Step 4: Read the converted figure and check that the selected units match the measurement you are working with.
Use case: Convert a weight measurement when a recipe, product specification, or reference uses a different unit system.
Use case: Check a figure in the unit your audience actually uses, such as kilograms instead of pounds.
Use case: Convert a set of values at once instead of rounding each one by hand.
Use case: Compare a package weight in grams or kilograms with a listing that uses ounces or pounds.
Use case: Work with precious-metal measurements by converting between troy ounces and other supported weight units.
Use case: Check gemstone measurements in carats when comparing values expressed in other supported units.
Use case: Review commercial weight figures when source data uses stones or US or UK tons.