Free Weight Converter Online

The Weight Converter is a free online tool that converts between kilograms, pounds, ounces, grams, stones, and other weight and mass units.

Yes, it is completely free with no registration required. All conversions happen client-side in your browser.

Yes, the Weight Converter supports both metric units (grams, kilograms) and imperial units (ounces, pounds, stones) and converts between them instantly.

Absolutely. The Weight Converter processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the Weight Converter is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the Weight Converter in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

The Weight Converter works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

One kilogram equals about 2.20462 pounds, so to go from kilograms to pounds you multiply by 2.20462, and to go the other way you divide. The relationship is fixed by an exact international definition: one pound is precisely 0.45359237 kilograms. That means 5 kg is roughly 11.02 lb, 10 kg is about 22.05 lb, and 100 kg is around 220.46 lb. A common quick estimate is to double the kilograms and add ten percent, which gets you close enough for everyday use but drifts off for larger numbers. For anything that needs to be exact, such as shipping weights, body-weight tracking, or a recipe, rounding by hand introduces error. This converter applies the full factor internally and lets you choose how many decimal places to show, so enter your value in kg and read the precise pound figure instantly.

A standard (avoirdupois) ounce weighs about 28.3495 grams and is the ounce used for food, mail, and everyday goods. A troy ounce weighs about 31.1035 grams, roughly ten percent heavier, and is used exclusively for precious metals like gold, silver, and platinum. This is why a one-ounce gold coin actually contains more metal than a one-ounce bag of coffee. The two systems also count differently: a troy pound holds 12 troy ounces, while a standard pound holds 16 avoirdupois ounces, so a troy pound is lighter overall despite the heavier ounce. Confusing the two can throw off a precious-metal valuation by a meaningful margin. This converter keeps both units separate, listing troy ounces, troy pounds, pennyweights, carats, and grains under their own troy category, so select the exact ounce you mean and get an accurate gram or kilogram equivalent.

One stone equals exactly 14 pounds, which is about 6.35029 kilograms. To convert stone to pounds you multiply by 14, and to reach kilograms you multiply by 6.35029. So 10 stone is 140 pounds or roughly 63.5 kg, and 12 stone is 168 pounds or about 76.2 kg. The stone is still the standard way people in Britain and Ireland describe body weight, even though scales and medical records there often read in kilograms, which makes converting between the three a frequent task. Because body weight is sometimes given as a mix, such as 11 stone 4 pounds, it helps to convert the whole pound figure first. Enter your figure in stone here and read the kilogram and pound equivalents at once, or open the built-in BMI calculator, which accepts weight in kilograms or pounds directly.

The word ton refers to three different units, which is why the same number can mean noticeably different weights. A metric ton, also called a tonne, is exactly 1,000 kilograms, or about 2,204.6 pounds. A US short ton is 2,000 pounds, which works out to roughly 907.185 kilograms. A UK long ton is 2,240 pounds, or about 1,016.05 kilograms. So a long ton is heavier than a short ton, and the metric tonne sits between them. The gap matters for freight, vehicle ratings, and material orders, where reading a short ton as a tonne overstates the weight by around ten percent. This converter lists metric tons, US short tons, and UK long tons as separate units so there is no ambiguity. Pick the exact ton you mean from the unit list and the tool returns the correct kilogram or pound figure.

Volume-to-weight cooking conversions are reliable only when the ingredient is specified, because a cup measures space rather than mass and different ingredients have different densities. This tool reflects that: a cup of water weighs about 236.6 grams, a cup of all-purpose flour about 120 grams, and a cup of granulated sugar about 200 grams, so the same cup gives three different weights. Those figures are sensible averages, but real flour can vary by how it is scooped, sifted, or packed, which is why baking guides recommend weighing ingredients on a scale for consistent results. The teaspoon and tablespoon options here are also based on water. Treat the cup conversions as a solid practical estimate rather than a laboratory measurement. To use them, pick the matching cooking unit, enter your amount, and read the gram or ounce equivalent for your recipe.