Convert Metric Ton to Stone (t → st)

Converting metric tons to stones is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.

1. 1
   Take your value in metric tons

   Start with the number of metric tons (t) you want to convert.
2. 2
   Multiply by 157.47304

   The conversion factor from t to st is 157.47304. Multiply your value by this number.
3. 3
   Read the result in stones

   The result is your value in stones (st).

Multiply the value in metric tons by 157.47304. For the reverse direction, multiply by 0.00635.

• ✓1 t = 1000 kg exactly. The British "tonne" and the metric "ton" are identical.
• ✓In export contracts always specify "metric ton" or "MT" to avoid ambiguity with US or UK tons.
• ✓Commodity prices (wheat, sugar, iron ore) are usually quoted per metric ton.

• ✗Using "ton" without qualifier in US contracts — default is often the short ton (907 kg), a 9% gap.
• ✗Confusing metric ton with long ton on UK-origin commodity contracts.
• ✗Writing "ton" when accuracy matters in shipping — always write "MT" or "tonne".

What is the Metric Ton?

The metric ton (or tonne) equals exactly 1,000 kilograms and is the international standard for shipping, agriculture, construction, and industrial weight. Adopted as part of the SI system, the metric ton is used worldwide for bulk commodities (grain harvests measured in tons per hectare), vehicle and shipping container masses, freight rates, and CO₂ emissions accounting. A standard 20-foot shipping container has a maximum gross weight of about 24 metric tons. The metric ton is distinct from the US short ton (907.185 kg) and the UK long ton (1,016.047 kg). The unit's spelling differs by country — 'tonne' in British and international usage, 'metric ton' in American — but the abbreviation 't' is universal. It relates to the kilogram (1,000 kg = 1 t) and the megagram (1 Mg = 1 t).

• International shipping and freight
• Agricultural yield (grain, sugar, coffee)
• Steel, cement and industrial production

What is the Stone?

The stone equals exactly 14 pounds or 6.35029318 kilograms and remains the traditional British unit for personal body weight. Originally based on a stone literally used as a counterweight on a balance scale, the unit was standardized at 14 pounds by an Act of Parliament in 1835. While metrication has reduced its role in commerce, the stone persists in British everyday life — a person is described as '11 stone 4' (158 lb) rather than 72 kg — and is widely used in British and Irish weight-loss programs, medical contexts, and gym equipment. The stone is virtually unknown in the United States and most of the world. It relates to the pound (14 lb = 1 stone), the kilogram (1 stone ≈ 6.35 kg), and the long ton (160 stone = 1 long ton). Stones-and-pounds notation (like '11 st 4 lb') is the British equivalent of decimal kilograms.

• Human body weight in the UK and Ireland
• British medical charts and patient records
• British boxing and wrestling press reports