What this converter does
This converter turns metric tons (tonnes) into US short tons and back, and also covers the imperial long ton and kilograms. The three “tons” are genuinely different sizes, so mixing them causes real quantity errors. Type a mass and read the answer instantly.
A metric ton is 1,000 kg; a US short ton is 2,000 lb (907 kg); a long ton is 2,240 lb (1,016 kg). Aggregate, steel and freight quantities cross these systems constantly.
The units it covers
The three “tons” differ — each converts through the kilogram with an exact factor.
View all units & their values
| Unit | Symbol | Value | Mainly used |
|---|---|---|---|
| Metric ton (tonne) | t | 1000 | Global standard, 1,000 kg |
| US ton (short) | US ton | 907.18 | US freight & aggregate |
| Imperial ton (long) | long ton | 1016.05 | UK/shipping historic |
| Kilogram | kg | 1 | SI base mass |
The formula
Each ton has a fixed value in kilograms, so any pair converts through the kilogram:
result = value × factor_from ÷ factor_toWhere:
- value = the number you typed, in the “from” unit
- factor_from = the “from” unit’s value in kilograms
- factor_to = the “to” unit’s value in kilograms
Worked example
Convert 100 metric tonnes of aggregate to US short tons.
1 t = 1000 kg · 1 US ton = 907.18474 kg100 × 1000 ÷ 907.18474 = 110.23 US tonSo 100 tonnes equals about 110.2 US short tons for US haulage.
The units in this example
The global standard ton — exactly 1,000 kilograms. The default for mass on metric drawings, bills of quantities and international freight.
- 1 t = 1,000 kg
- 1 t ≈ 1.1023 US ton
- 1 t ≈ 0.9842 long ton
- 1 t ≈ 2,204.6 lb
The US customary ton — 2,000 pounds, or about 907.18 kg. Used for aggregate, freight and scrap in the United States.
- 1 US ton = 2,000 lb
- 1 US ton ≈ 907.18 kg
- 1 US ton ≈ 0.9072 t
- 1 US ton ≈ 0.8929 long ton