How to Use Weight Converter
The Weight Converter turns any weight value into every common unit on demand. Enter a number, pick the source unit, then pick the target unit. The Weight Converter is built for everyday life, fitness records, international shipping and any place metric and imperial weights mix.
- Enter the weight value - Decimal numbers are supported.
- Pick the source unit - kg, g, mg, lb, oz, st or t.
- Pick the target unit - The Weight Converter also lists every other unit for reference.
Formula & Theory - Weight Converter
The Weight Converter uses kilograms as the canonical unit:
kg = value × factor(from)
result = kg / factor(to)| Unit | Kilograms per unit |
|---|---|
| Kilogram (kg) | 1 |
| Gram (g) | 0.001 |
| Milligram (mg) | 0.000001 |
| Pound (lb) | 0.45359237 |
| Ounce (oz) | 0.028349523125 |
| Stone (st) | 6.35029318 |
| Tonne (t) | 1000 |
Reference values
- 1 kg = 1000 g = 2.20462 lb = 35.27396 oz.
- 1 lb = 16 oz = 453.59237 g.
- 1 stone = 14 lb ≈ 6.35029 kg.
- 1 tonne = 1000 kg ≈ 2204.62 lb.
Assumptions and Limits
The Weight Converter uses the international avoirdupois pound and ounce. For precious metals, use a troy-specific calculator.
Use Cases for Weight Converter
The Weight Converter is useful in many contexts:
- Personal body weight - Move quickly between kg, lb and stones.
- Fitness and gym - Convert plate, dumbbell and body weight values.
- International shipping - Compare parcel weights between metric and imperial.
- Cooking and groceries - Translate package weights between systems.
- Construction and trade - Move bulk weights between t and lb.
The Weight Converter keeps every conversion explicit, so you can compare values across systems with confidence.