Weight Converter

Convert between metric (mg, g, kg, tonne) and imperial (oz, lb, stone) units instantly.

Reviewed by the WorldCalcs team · Methodology · Last reviewed: June 2026

Result

2.2046226 lb

1 kg = 2.2046226 lb

All units

1 kg converted into every supported unit.

UnitValue
Milligram (mg)1 000 000
Gram (g)1 000
Kilogram (kg)1
Tonne (t)0.001
Ounce (oz)35.273962
Pound (lb)2.2046226
Stone (st)0.15747304

What is a weight converter?

A weight (mass) converter changes a measurement between units such as grams, kilograms, ounces and pounds. It covers metric units (milligram, gram, kilogram, tonne) and imperial/US units (ounce, pound, stone).

How it works

Each unit has a fixed ratio to the kilogram. The tool converts your value into kilograms, then into the unit you choose. The defining ratios are exact: 1 pound = 0.45359237 kg and 1 ounce = 28.349523125 g. Because these are agreed standards, the numbers don't change.

All calculations happen in your browser. Nothing is sent, stored, or tracked.

Results are estimates and may contain errors — for general information only, not professional advice. Always verify before relying on them. Disclaimer

How to use

Enter a value, pick the unit you're converting from, and the unit you want the answer in. The result updates as you type.

Conversions go through grams using exact factors: 1 ounce = 28.349523125 g, 1 pound = 453.59237 g, 1 stone = 6350.29318 g. Metric units use clean powers of ten.

Frequently asked questions

Which pound is used?+

The international avoirdupois pound: 1 lb = 453.59237 grams exactly. This is the pound used in the US and UK for everyday weights and on food labels.

Is a tonne the same as a US ton?+

No. This calculator uses the metric tonne (1,000 kg). A US 'short ton' is 2,000 lb (≈907.185 kg) and a UK 'long ton' is 2,240 lb (≈1,016.047 kg) — not included here.

How precise is the result?+

Up to 8 significant digits. All conversions go through grams using exact international factors (1 oz = 28.349523125 g, 1 lb = 453.59237 g, 1 stone = 6350.29318 g).

How many grams are in an ounce?+

Exactly 28.349523125 g (the avoirdupois ounce).

How many kilograms are in a pound?+

Exactly 0.45359237 kg.

How many pounds are in a kilogram?+

About 2.2046226 lb.

Is mass the same as weight?+

In everyday use yes, but strictly mass is the amount of matter (kg) while weight is the force of gravity on it. This tool converts mass units.