Stone to Ton (metric) Conversion Calculator: Free Online Tool
Convert stones to tons with our free online weight converter.
Stone to Ton (metric) Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Stone).
- The converted value in Ton (metric) will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Weight category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Stone to Ton (metric)
Converting Stone to Ton (metric) involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Stone = 0.00635029 tonsExample Calculation:
Convert 5 stones: 5 × 0.00635029 = 0.0317515 tons
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Stone and a Ton (metric)?
The stone (st) is a unit of mass in the British imperial system, defined as exactly 14 avoirdupois pounds. This is equivalent to approximately 6.35 kilograms.
The metric ton (or tonne) is a unit of mass equal to 1,000 kilograms (kg). It is part of the International System of Units (SI) although not technically an SI unit itself, it is accepted for use with SI. It is equivalent to approximately 2,204.6 pounds.
Note: The Stone is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Ton (metric) belongs to the imperial/US customary system.
History of the Stone and Ton (metric)
The stone has historical roots in trade, where actual stones were used as weights. Its value varied significantly by commodity and region before being standardized at 14 pounds in Britain for general purposes.
The term "tonne" derives from the "tun", an old English unit of volume for large casks. The metric tonne was defined as 1,000 kilograms to provide a larger metric unit for trade and industry, aligning with the decimal nature of the SI system.
Common Uses for stones and tons
Explore the typical applications for both Stone (imperial/US) and Ton (metric) (imperial/US) to understand their common contexts.
Common Uses for stones
- Body Weight: Primarily used in the UK and Ireland to express human body weight.
- Animal Weighing: Occasionally used informally for weighing large animals or agricultural produce in some Commonwealth countries.
- Historical Usage: Largely historical or colloquial use outside of body weight context.
Common Uses for tons
- Transportation: Measuring the mass of vehicles like cars, trucks, and heavy machinery.
- Shipping & Logistics: Quantifying large amounts of bulk cargo in shipping (e.g., coal, grain, ore).
- Agriculture: Expressing crop yields and large-scale agricultural production.
- Heavy Industry: Standard unit for production outputs in steel manufacturing, mining, and construction.
- Waste Management: Used for calculating municipal solid waste volumes and recycling quantities.
Frequently Asked Questions
Questions About Stone (st)
How many pounds are in a stone?
There are 14 pounds (lb) in 1 stone (st).
Is the stone used outside the UK and Ireland?
Its use is very limited outside the UK and Ireland, mainly for historical context or by people familiar with imperial body weight measurements.
Why is it called a stone?
The name originates from the historical practice of using stones of a standardized size as weight standards in trade.
About Ton (metric) (t)
How many kilograms are in a metric ton?
There are exactly 1,000 kilograms (kg) in 1 metric ton (t).
Is a metric ton the same as a US ton?
No. A metric ton (1,000 kg) is slightly heavier than a US ton (also called a short ton, 2,000 lbs or about 907.18 kg).
Why is it sometimes spelled "tonne"?
The spelling "tonne" is often used internationally to distinguish it clearly from the imperial/US tons (short ton and long ton).
Conversion Table: Stone to Ton (metric)
| Stone (st) | Ton (metric) (t) |
|---|---|
| 1 | 0.006 |
| 5 | 0.032 |
| 10 | 0.064 |
| 25 | 0.159 |
| 50 | 0.318 |
| 100 | 0.635 |
| 500 | 3.175 |
| 1,000 | 6.35 |
All Weight Conversions
Other Units from Weight
- Kilogram (kg)
- Gram (g)
- Milligram (mg)
- Pound (lb)
- Ounce (oz)
- Ton (US) (ton)
- Ton (UK) (long ton)
- Microgram (µg)
- Carat (ct)
- Slug (sl)
- Troy Ounce (oz t)
- Pennyweight (dwt)
- Grain (gr)
- Dram (dr)
- Quintal (q)
- Atomic Mass Unit (u)
- Pavan (India) (pavan)
- Kati (India) (kati)
- Masha (India) (masha)
- Dina (India) (dina)
- Pras (India) (pras)
- Lota (India) (lota)