Free Weight Converter
Quick Reference
1 kg = 2.20462 lb • 1 lb = 16 oz1 st = 14 lb • 1 t = 1000 kg
1 oz = 28.35 g • 1 kg = 1000 g
1 US ton = 2000 lb • 1 long ton = 2240 lb
1 kg = 2.20462 lb
1 lb = 0.45359 kg
Enter a weight and select a unit - results update automatically
Weight Converter: Switch Between Every Mass Unit
This free Weight Converter translates a single mass across metric, imperial, and troy units in real time. Type a value into any field and every other unit updates instantly — no need to memorize factors or chain conversions by hand. Use it as a quick kg to lbs calculator, a lbs to kg converter, or a full weight unit converter across more than a dozen units.
Weight vs. Mass: A Quick Disclaimer
In everyday speech we say "weight" when we technically mean mass — the amount of matter in an object. True weight is a force, measured in newtons, equal to mass times gravitational acceleration:
Because Earth's gravity is nearly constant across the surface, mass and weight stay proportional, so kilograms and pounds can be used interchangeably in daily life. This tool follows that everyday convention.
The Units This Converter Handles
| System | Unit | Symbol | Relation |
|---|---|---|---|
| Metric | microgram | ||
| Metric | milligram | mg | |
| Metric | gram | g | base |
| Metric | kilogram | kg | |
| Metric | metric ton | t | |
| Imperial | grain | gr | |
| Imperial | ounce | oz | |
| Imperial | pound | lb | base |
| Imperial | stone | st | |
| Imperial | US (short) ton | — | |
| Imperial | long ton | — |
The Core Cross-System Conversion
The single most-used relationship is the kilogram to pound conversion, legally fixed at:
From this anchor, every other cross-system factor follows. Since one pound contains 16 ounces and one stone holds 14 pounds:
A Weight Conversion Chart
For fast lookup, the table below maps kilogram values to ounces, stones, and pounds — a handy reference alongside this weight conversion calculator.
| Kilograms | Ounces | Stones | Pounds |
|---|---|---|---|
| 10 | 352.74 | 1.5747 | 22.046 |
| 20 | 705.5 | 3.1495 | 44.09 |
| 40 | 1411 | 6.299 | 88.18 |
| 60 | 2116.4 | 9.448 | 132.28 |
| 80 | 2822 | 12.598 | 176.37 |
| 100 | 3527.4 | 15.747 | 220.46 |
Where Each Imperial Unit Comes From
The pound (abbreviated , from the Roman libra) is the everyday mass unit in the United States and remains common in the UK for body weight. The stone — equal to pounds — is used mostly in the British Isles to quote a person's weight. The ounce fills the smallest imperial steps at one-sixteenth of a pound.
How to Use This Converter
- Type a value into any unit field (kilograms, pounds, ounces, stones, and more).
- Every other field updates instantly with the converted mass.
- Use the unit dropdowns to switch to less common units such as grains, drachms, or metric tons.
Whether you need to convert kg to lbs, convert lbs to kg, or move between any pair of mass units, this free weight converter online does the arithmetic for you.
FAQ
1. How do I convert kg to lbs?
Multiply the kilogram value by 2.20462. For example, 10 kg × 2.20462 = 22.046 lbs. The converter does this instantly.
2. How do I convert lbs to kg?
Divide the pound value by 2.20462, or multiply by 0.45359237. For example, 100 lbs ÷ 2.20462 = 45.36 kg.
3. How many ounces are in a pound?
There are 16 ounces in one pound. Since 1 lb = 453.59 g, one ounce equals about 28.35 g.
4. What is a stone and how much does it weigh?
A stone is an imperial unit equal to 14 pounds, or about 6.35 kg. It is used mainly in the UK and Ireland to express body weight.
5. Is weight the same as mass?
No. Mass measures the amount of matter and stays constant, while weight is the force of gravity on that mass. On Earth they are proportional, so everyday units treat them interchangeably.
How to Use
- Enter the weight value in the input field and select the unit you want to convert from.
- View the equivalent weight instantly displayed in all supported units.
- Use the conversion results for cooking recipes, fitness tracking, shipping calculations, or scientific work.