Convert stone to tonne

Here you can quickly calculate how many tonne fit in one stone.

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Conversion from stone to tonne example

Starting value Increment Accuracy

To convert stone to tonne, multiply by 0.00635.

1 st = 0.00635 t

Example: 1 stone = 0.00635 tonne

The word 'ton' names three different weights: the metric tonne (1,000 kg), the US short ton (about 907 kg) and the UK long ton (about 1,016 kg). US sources almost always mean the short ton, older UK sources the long ton. Check which ton is meant before converting, they differ by up to 11%.
A stone is often assumed to be 10 pounds, but it is 14 pounds, about 6.35 kg. A body weight of '12 stone' is therefore about 76 kg, not 54 kg. Multiply stone by 6.35 to get kilograms.

Score: 0

138 stone equals 0.438 tonne.

Correct answer: 138 stone = 0.876 tonne.

12.3 stone equals 0.0781 tonne.

Correct answer: 12.3 stone = 0.0781 tonne.

0.6 stone equals 0.00191 tonne.

Correct answer: 0.6 stone = 0.00381 tonne.

23.5 tonne equals 3.7e+3 stone.

Correct answer: 23.5 tonne = 3.7e+3 stone.