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Short Tons to Metric Tons

1 Short Ton (US) (ton) = 0.907185Metric Ton (t)

Last updated: Reviewed by James Whitfield , Physical Sciences Specialist
Accuracy verified. Conversions on this page are calculated against SI (BIPM) and NIST standards and reviewed for correctness.
Result
0.907185 t
1 ton = 0.907185 t

How Many Metric Tons in a Short Ton?

One short ton (US ton) equals approximately 0.907185 metric tons. To convert short tons to metric tons, multiply the short ton value by 0.907185. The short ton is the standard ton used in the United States for bulk commodities like coal, steel, grain, and aggregate. The metric ton (also called a tonne) is used in virtually every other country and in international trade and shipping. When US industries report production volumes, they commonly use short tons, while global statistics use metric tons — making this conversion essential for anyone reading commodity reports, shipping contracts, or international trade data. The difference between a short ton and a metric ton is about 9.3%: a metric ton is heavier, so there are fewer metric tons than short tons for the same mass.

How to Convert Short Ton (US) to Metric Ton

  1. Start with your weight in short tons (US tons).
  2. Multiply by 0.907185 to get metric tons.
  3. For a quick estimate, multiply by 0.9 (about 0.8% low).
  4. To convert back from metric tons to short tons, multiply by 1.10231.

Real-World Examples

A US coal mine produces 5,000 short tons per day. How many metric tons is that?
5,000 × 0.907185 = 4,535.9 metric tons per day.
A steel mill orders 250 short tons of iron ore. Express in metric tons for an international supplier.
250 × 0.907185 = 226.8 metric tons.
A grain elevator holds 10,000 short tons of corn. What is the capacity in metric tons?
10,000 × 0.907185 = 9,071.85 metric tons.
A freight quote lists cargo as 750 short tons. Convert to metric tons for a European logistics company.
750 × 0.907185 = 680.4 metric tons.
A recycling facility processes 1,200 short tons of scrap metal monthly. What is the metric equivalent?
1,200 × 0.907185 = 1,088.6 metric tons.

Quick Reference

Short Ton (US) (ton)Metric Ton (t)
10.907185
21.81437
54.53592
109.07185
2522.6796
5045.3592
10090.7185

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History of Short Ton (US) and Metric Ton

The short ton emerged from the British hundredweight and ton system brought to North America by English colonists. The British 'long ton' was 2,240 pounds (20 hundredweights of 112 lbs each), a number rooted in historical wool-trade standards. In the United States, the hundredweight was redefined as 100 pounds — a round number more convenient for commerce — which meant the ton became 2,000 pounds, the 'short' ton. The metric ton was defined in 1875 as exactly 1,000 kilograms as part of the metric system's effort to create decimal-based units. At 2,204.62 pounds, the metric ton falls between the short ton (2,000 lbs) and the long ton (2,240 lbs). The US never adopted the metric ton as a standard domestic unit, so the short ton remains entrenched in American industry, particularly in agriculture, mining, and construction. International commodity markets and scientific publications use metric tons, creating a perpetual need for this conversion whenever US production data must be presented to global audiences.

Common Mistakes to Avoid

  • Confusing short tons with long tons. A short ton is 2,000 lbs; a long ton (UK) is 2,240 lbs; a metric ton is 2,204.62 lbs. The short ton is the lightest of the three.
  • Assuming 'ton' means the same thing globally. In the US, 'ton' typically means short ton. In the UK, 'ton' often means long ton. Internationally, 'tonne' means metric ton. Always clarify which ton is being used in contracts and specifications.
  • Reversing the conversion direction. To go from short tons to metric tons, multiply by 0.907. To go from metric tons to short tons, multiply by 1.102. Since short tons are lighter, there are more short tons than metric tons for the same mass.
  • Using 0.9 as an exact conversion factor. The actual value is 0.907185. For large quantities, this difference matters: 10,000 short tons × 0.9 = 9,000 MT vs. the correct 9,072 MT — a 72 metric ton error.

Frequently Asked Questions

What is the difference between a short ton, long ton, and metric ton?
A short ton (US ton) = 2,000 pounds = 907.185 kg. A long ton (UK ton) = 2,240 pounds = 1,016.05 kg. A metric ton (tonne) = 1,000 kg = 2,204.62 pounds. The metric ton sits between the two Anglo-American tons. The US uses short tons; the UK uses long tons (though increasingly metric tons); the rest of the world uses metric tons.
Why does the US still use short tons instead of metric tons?
Historical inertia and the cost of conversion. US industries — coal, steel, agriculture, construction — built decades of infrastructure, contracts, regulations, and software around short tons. While the US officially recognized the metric system in 1875 and the Metric Conversion Act of 1975 encouraged voluntary adoption, mandatory metrication was never implemented. The short ton remains standard for domestic US commerce.
When should I use metric tons vs. short tons in international trade?
International shipping contracts, most commodity exchanges, and import/export documentation increasingly use metric tons. The United Nations and most international organizations publish data in metric tons. However, US domestic production data for coal, steel, and grains is often reported in short tons. Always check which unit is being used in any commodity price or production report.
Is 1 short ton exactly 0.907185 metric tons?
The exact value is 1 short ton = 907.18474 kg = 0.90718474 metric tons (since 1 metric ton = 1,000 kg exactly, and 1 pound = 0.45359237 kg exactly, so 2,000 lbs = 907.18474 kg). The 0.907185 factor is accurate to six significant figures and sufficient for all practical purposes.
Quick Tip

A useful approximation: one short ton ≈ 9/10 of a metric ton. To convert short tons to metric tons quickly, multiply by 9 and divide by 10 (or subtract 10% from the value). For precision work, use the full factor 0.907185. Example: 500 short tons → 500 × 0.9 = 450, and the actual answer is 453.6 metric tons.

Common Weight Reference

A loaf of bread ≈ 450 g (1 lb). A gallon of water ≈ 3.78 kg (8.34 lb). An average adult ≈ 70–80 kg (154–176 lb). A compact car ≈ 1,400 kg (3,086 lb).

Further Reading

NIST — Unit Conversion FactorsBIPM — The International System of Units (SI)

Sources & References