ProWeight
Enterprise Conversion Utility
Precision Mass Calculator
Enter a value in either field for instant, bidirectional conversion.
Quick Add:
Equivalence Visualizer
A physical representation of the conversion.
Balanced
Relative Magnitude Chart
Reference Guide
Mass vs. Weight
In everyday language, "weight" is often used to describe mass. Scientifically, mass is the amount of matter in an object (measured in kilograms or pounds), while weight is the gravitational force acting on that matter (measured in Newtons). This tool standardizes mass conversions across global systems.
The Global Standards
Metric System (SI)
The modern standard for science, industry, and daily use worldwide. Based on multiples of 10. The base unit is the Kilogram (kg).
- 1 Kilogram (kg) = 1,000 Grams (g)
- 1 Metric Ton (t) = 1,000 Kilograms
Imperial & US Customary
Primarily used in the United States and parts of the UK. Standardized internationally in 1959.
- 1 Pound (lb) = Exactly 0.45359237 kg
- 1 Pound (lb) = 16 Ounces (oz)
- 1 Stone (st) = 14 Pounds (UK specific)
Common Conversions
| From | To | Multiplier |
|---|---|---|
| Kilograms | Pounds | × 2.20462 |
| Pounds | Kilograms | × 0.45359 |
| Ounces | Grams | × 28.3495 |
ProWeight Utility • Built for precision • IEEE 754 Floating Point Standard applied