Weight Converter
Convert between milligrams, grams, kilograms, metric tonnes, ounces, pounds, and stone instantly. Three tiers: Quick, Extended with kitchen/body/industrial tabs, and Professional with density-based and troy weight conversion.
Quick Calculator Get a fast estimate
Conversion Result
1 kg = 1000 g
Milligrams (mg)
1000000
Ounces (oz)
35.27399
Pounds (lb)
2.20462
Stone (st)
0.1574731
How to Use This Converter
Select the unit you want to convert from and to, then type a value in either field. The result updates instantly. Use the ⇄ button to swap units. South Africa uses the metric system — kilograms and grams are standard. Pounds and ounces appear on imported goods and in recipes from the US and UK.
Need more detail?
Extended Calculator More options, charts, and scenario comparison
Result
17.637 oz
In Kilograms
0.5 kg
In Grams
500 g
Weight Comparison
Kitchen Popular Conversions
| From | To | Result |
|---|---|---|
| 500 g | Ounce (oz) | 17.637 |
| 500 g | Pound (lb) | 1.10231 |
| 0.5 kg | Pound (lb) | 1.10231 |
| 17.637 oz | Gram (g) | 500 |
| 1.10231 lb | Kilogram (kg) | 0.5 |
| 0.5 kg | Ounce (oz) | 17.637 |
Weight Conversion Table
| Unit | In Kilograms |
|---|---|
| 1 Milligram (mg) | 0.000 001 kg |
| 1 Gram (g) | 0.001 kg |
| 1 Kilogram (kg) | 1 kg |
| 1 Ounce (oz) | 0.028 35 kg |
| 1 Pound (lb) | 0.453 59 kg |
| 1 Stone (st) | 6.350 29 kg |
| 1 Metric Tonne (t) | 1 000 kg |
Need full precision?
Professional Calculator Complete parameters, sensitivity analysis, and detailed breakdown
Weight Conversion
Base Value
1 kg
Metric
| Unit | Value |
|---|---|
| Microgram (mcg) | 1 000 000 000 |
| Milligram (mg) | 1 000 000 |
| Gram (g) | 1 000 |
| Kilogram (kg) | 1 |
| Metric Tonne | 0,001 |
Imperial
| Unit | Value |
|---|---|
| Grain (gr) | 15 432,4 |
| Ounce (oz) | 35,274 |
| Pound (lb) | 2,205 |
| Stone (st) | 0,157 |
| Short Ton (US) | 0,001 |
| Long Ton (UK) | 0,001 |
Precious Metals (Troy)
| Unit | Value |
|---|---|
| Troy Ounce | 32,151 |
| Troy Pound | 2,679 |
| Pennyweight | 643,015 |
Scientific
| Unit | Value |
|---|---|
| Atomic Mass Unit (u) | 6.0221e+26 |
| Slug | 0,069 |
Volume-to-Weight Calculator (Density-Based)
Weight of 1 L of Water
1 kg
In Grams
1 000 g
In Pounds
2,205 lb
Density Used
1 kg/L
Frequently Asked Questions
1 pound (lb) equals 0.453 592 kilograms. A quick approximation: divide pounds by 2.2 to get kilograms. So 100 lb ÷ 2.2 ≈ 45.4 kg.
Mass is the amount of matter in an object (measured in kg), while weight is the gravitational force on that mass (measured in Newtons). In everyday usage, the terms are used interchangeably, and bathroom scales actually measure weight but display the equivalent mass assuming Earth's gravity.
Multiply stone by 6.35029 to get kilograms. For example, 12 stone × 6.35 = 76.2 kg. Stone is an imperial unit mainly still used in the UK and Ireland for body weight.
There are 28.3495 grams in one ounce. When following US recipes, note that a fluid ounce (volume) is different from a weight ounce.
No. A metric tonne = 1 000 kg = 2 204.6 lb. A US short ton = 2 000 lb = 907.2 kg. A UK long ton = 2 240 lb = 1 016 kg. South Africa uses the metric tonne.