Stone to tonnes – convert st to t
Convert stone to tonnes (st to t) to turn UK-style body weights and loads into neat metric tonne values. This page opens the main mass converter with st → t pre-selected.
Open the interactive stone → tonnes converter:
Use main converter (st → t) or switch to t → stThe same mass tool also converts between stones, pounds, kilograms, ounces and tonnes for any combination you need.
Quick reference: stone to tonnes
One stone is about 0.00635 t. So: t = st × 0.00635029318. Examples:
| Weight (st) | Weight (t, approx.) |
|---|---|
| 5 st | 0.0318 t |
| 10 st | 0.0635 t |
| 12 st | 0.0762 t |
| 15 st | 0.0953 t |
| 20 st | 0.1270 t |
| 30 st | 0.1905 t |
Why convert stone to tonnes?
Stone to tonnes is useful when you:
- Record body weight or patient data in strictly metric systems.
- Convert older records in stones to modern SI units for research.
- Summarise cargo or luggage weights in tonnes for transport paperwork.
- Work with international teams who expect mass in tonnes and kilograms.
Other mass converters on this site
This converter uses 1 st ≈ 6.35029318 kg and 1 t = 1000 kg, matching standard international definitions.
Page last updated: 4 December 2025.