Weight Converter
Convert any weight between grams, kilograms, pounds, ounces, and stone instantly.
Example
Convert 5 kilograms to pounds: 5 kg x 1000 = 5000 g, then 5000 / 453.59237 = 11.023 lb. The same 5 kg also equals 176.37 oz or 0.787 stone.
How it works
Each unit is converted to a base of grams using fixed factors (1 kg = 1000 g, 1 lb = 453.59237 g, 1 oz = 28.349523125 g, 1 stone = 6350.29318 g), then the base value is divided by the target unit's factor to get the result.
Good to know
The Weight Converter turns a single weight value into its equivalent across five common mass units: grams, kilograms, pounds, ounces, and stone. You enter an amount, pick a "from" unit and a "to" unit, and the headline result updates live; below it, the same weight is shown simultaneously in all five units so you do not have to run multiple conversions. It is handy for cooking and baking, shipping and parcel weights, gym and body-weight tracking, science homework, and anyone reconciling metric and imperial figures.
Reach for it whenever a recipe, scale, luggage allowance, or fitness app reports a weight in units you do not normally use. Typical moments include converting a kitchen-scale reading from grams to ounces, checking whether a suitcase under 23 kg clears a 50 lb limit, or translating a UK body weight quoted in stone into kilograms for a metric chart.
To read the result, treat the large number as your selected target unit and use the row of five stats underneath as a cross-check or for picking a different unit on the fly. The tool rounds for readability rather than truncating: very small values show up to six decimal places, mid-range values three, and large values two, so the displayed figure is a rounded representation rather than the full-precision number.
A practical caveat: this is a mass conversion, not a weight-versus-volume conversion. Converting grams to ounces of flour gives you ounces by mass, which is not the same as fluid ounces or cups, and ounces here are always avoirdupois (the everyday weight ounce), not the troy ounces used for precious metals. For trade, medical dosing, or legal weights, confirm the final figure against the original full-precision source.
Frequently asked questions
How many grams are in a pound?
One international avoirdupois pound equals exactly 453.59237 grams. This is the standard used in the US and UK for everyday weight, and it is what this converter uses for all pound and ounce calculations.
What is a stone in pounds and kilograms?
One stone equals 14 pounds, which is about 6.35029 kilograms. The stone is commonly used in the UK and Ireland to measure body weight, so 70 kg is roughly 11.02 stone.
Is my data uploaded anywhere?
No — this calculator runs entirely in your browser. Your inputs never leave your device, and it works offline once loaded.
Is this calculator free?
Yes, completely free with no sign-up and no limits.
People also ask
How many ounces are in a kilogram?
One kilogram equals about 35.274 ounces (avoirdupois). This comes from dividing 1000 grams by 28.349523125 grams per ounce.
How do I convert kg to lb in my head?
Multiply the kilograms by roughly 2.2 for a quick estimate. For example, 10 kg is about 22 lb; the exact factor is 1 kg = 2.20462 lb.
Is an ounce of weight the same as a fluid ounce?
No. An ounce of weight (avoirdupois) measures mass, while a fluid ounce measures volume. This converter handles weight ounces only, so it cannot convert between mass and liquid volume.
What is the difference between an avoirdupois ounce and a troy ounce?
An avoirdupois ounce is about 28.35 grams and is used for everyday goods, while a troy ounce is about 31.10 grams and is used for precious metals like gold and silver. This tool uses the avoirdupois ounce.
How many kilograms is 12 stone?
12 stone is 168 pounds, which is about 76.2 kilograms. One stone equals 14 pounds, or roughly 6.35029 kilograms.
Why does the converted result show different numbers of decimal places?
The tool adjusts rounding to keep numbers readable: very small values display up to six decimals, values under one show four, mid-range values three, and large values two. The displayed figure is rounded, not the full-precision value.
How do I convert grams to pounds and ounces together?
Divide the grams by 453.59237 to get total pounds, take the whole number as pounds, then multiply the remaining fraction by 16 to get the ounces. For instance, 1000 g is about 2.2046 lb, or roughly 2 lb 3.27 oz.
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