Weight & Mass Converter
Mass is a measure of the amount of matter in an object, while Weight is the force exerted on that mass by gravity. In daily life and commerce, these terms are often used interchangeably, yet the units vary wildly across borders and industries.
This professional converter bridges the gap between global standards. It handles the Metric System used in science, Imperial units common in the US and UK, and specialized regional measurements like the Indian Maund or Tola used in the gold trade. It also resolves the confusion between Short, Long, and Metric Tons.
Metric (SI)
StandardAsian & Regional
LocalMicro & Science
LabImperial / US
CommonPrecious Metals
GoldApothecary
MedCommon Pitfalls: The Tale of Three Tons
One of the most frequent errors in logistics and trade is confusing the various “Ton” units.
- US Short Ton: Exactly 2,000 lbs (approx. 907 kg). Commonly used in the United States.
- Metric Tonne: Exactly 1,000 kg (approx. 2,204 lbs). The global standard for trade.
- Imperial Long Ton: Exactly 2,240 lbs (approx. 1,016 kg). Traditionally used in the UK and Commonwealth.
Always verify which “ton” is specified in contracts to avoid significant discrepancies.
References
How to Use This Converter
Instantly convert across 20+ distinct weight systems.
Select Category
Find your unit in the relevant section (Metric, Imperial, Precious Metals, etc.).
Enter Value
Type any number. For precious metals, ensure you are using Troy ounces, not standard ounces.
Copy Result
Click the button to copy the precise value to your clipboard.