At One Place

Stone to tonnes

1 stone in tonnes
1 st = 0.0063503 t
t = st × 0.00635029318

To convert stone to tonnes, multiply by 0.00635029318. The table below gives the values people look up most often, and the converter works for any number.

Stone to tonnes table

Common stone values converted to tonnes.
Stone Tonnes
1 st 0.0063503
2 st 0.012701
3 st 0.019051
4 st 0.025401
5 st 0.031751
10 st 0.063503
15 st 0.095254
20 st 0.12701
25 st 0.15876
30 st 0.19051
40 st 0.25401
50 st 0.31751
75 st 0.47627
100 st 0.63503
250 st 1.587573
500 st 3.175147
1,000 st 6.350293

How the conversion works

The relationship is t = st × 0.00635029318. Both units measure mass, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

Tonne: Also called a metric ton.

Common questions

How many tonnes are in one stone?
One stone equals 0.0063503 tonnes. t = st × 0.00635029318.
How do you convert stone to tonnes?
Use t = st × 0.00635029318. So 10 st is 0.063503 t.
How many stone are in one tonne?
One tonne equals 157.473 stone, which is the reverse of the conversion above.
Is there more than one kind of tonne?
Also called a metric ton.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked