Tonne to Stone Converter (t to st) with Formula
1 tonne equals 157.473044 stone (st) — multiply the number of tonnes by 157.473044 to convert. A tonne (metric ton) is 1,000 kilograms, while a stone is a British imperial unit of 14 pounds, so one tonne is a little over 157 stone. Because the factor is fixed, the conversion is always exact once you apply it.
The formula
Multiply tonnes by the conversion factor to get stone:
stone = tonnes × 157.473044For example, 3 t × 157.473044 = 472.419132 st. To reverse it, divide by 157.473044 (or multiply by 0.00635029).
Conversion table
| Tonnes (t) | Stone (st) |
|---|---|
| 1 | 157.473044 |
| 2 | 314.946088 |
| 5 | 787.365220 |
| 10 | 1,574.730440 |
| 25 | 3,936.826100 |
| 50 | 7,873.652200 |
| 100 | 15,747.304400 |
| 500 | 78,736.522000 |
| 1000 | 157,473.044000 |
How to convert online
- Type the number of tonnes into the first box.
- Read the equivalent stone value instantly in the second box.
- Type a stone value instead to convert back to tonnes — it works both ways.
Use the Tonne to Stone Converter — free and instant in your browser.
Where this conversion is used
Tonnes are the standard unit for shipping freight, bulk agricultural produce, vehicle and machinery weights, and industrial materials, while stone remains common in the UK for expressing large personal or livestock weights in relatable terms. Converting between them helps when comparing metric cargo figures against imperial-scale references, or when translating scientific and trade data for a British audience.
FAQ
How many stone are in a tonne?
One tonne equals 157.473044 stone. For example, 10 tonnes = 1,574.730440 stone.
What is the formula to convert tonnes to stone?
Multiply the tonne value by 157.473044. In symbols, st = t × 157.473044.
How do I convert stone back to tonnes?
Divide the stone value by 157.473044, or multiply by 0.00635029. So 500 st ÷ 157.473044 ≈ 3.175147 t.
Is the conversion exact?
Yes. The factor 157.473044 is fixed, so every result is exact to the digits shown.
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