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To convert from Stone (st) to Metric Tonne (mt), use the following formula:
Metric Tonne (mt)
= 14 × 453.59237 × 1106× Stone (st)
= 0.00635029318× Stone (st)
With 453.59237 is the ratio between the base units Gram (g) and Pound (lb).
Let's convert 5 Stone (st) to Metric Tonne (mt).
Using the formula:
5 × 0.00635029318 = 0.0317514659
Therefore, 5 Stone (st) is equal to 0.0317514659 Metric Tonne (mt).
How many stones are in one metric tonne? One Metric Tonne (mt) contains 157.47304441776970052 Stones (st) — the inverse of the factor above. Multiplying by 0.00635029318 takes you from stones to metric tonnes; multiplying by 157.47304441776970052 brings you back.
Put in words: one stone equals 0.00635029318 metric tonnes, so the stone is the smaller unit of this pair. Converting between them never changes the amount of weight being measured — only the size of the unit you count it in.
The stone (st) is a unit of measurement equal to 14 pounds (lb).
It's part of the imperial system and is still commonly used in a few countries, especially for weighing people.
For use in international contexts or scientific applications, the stone is often converted to the metric system.
One stone is equal to exactly 6.35029318 kilograms (kg).
This precise conversion is used in international trade and science to ensure everyone is using the exact standard measurement.
Although it's an older unit, the stone remains the primary unit of measurement for body weight in the United Kingdom and Ireland.
It's common to hear someone state their weight as a combination of stone and pounds, like "12 stone 6 pounds."
The stone traces its origins back to the medieval English wool trade, where a "stone of wool" referred to a standard 14-pound measure used for buying and selling.
Stones for other goods could vary in weight—for example, a stone of glass was just 5 pounds—but over time, the 14-pound stone became the official legal standard.
The stone is almost never used on its own. Body weight in Britain and Ireland is quoted as stones and pounds, with the remainder written out rather than expressed as a decimal.
A person weighing 72 kg is "11 stone 4" — that is 11 st 4 lb, or 158 pounds — not "11.3 stone". Reading the decimal form as pounds is a common error: 11.3 st is 11 st 4.2 lb, close by coincidence, but 11.5 st means 11 st 7 lb, not 11 st 5 lb.
The conversions worth keeping to hand are:
The unit's survival is unusually specific. It was removed from British trade use by weights and measures legislation, so nothing is sold by the stone — shop scales read in kilograms and grams.
What survives is personal and conversational use: body weight, and by extension the weight of livestock and sporting figures such as boxing and horse-racing weights. Medical records in the UK are kept in kilograms, but patients are routinely told their weight in stones and pounds because that is the number they recognise.
Outside Britain and Ireland the unit is essentially unknown. The United States, despite sharing the pound, does not use the stone at all — American body weight is quoted in pounds alone, which is why a US figure of "158 lb" and a UK figure of "11 st 4" describe exactly the same person.
A metric tonne, often called simply a tonne (symbol: t), is a standard unit of mass in the metric system.
It's commonly used around the world to measure heavy objects, especially in trade and industry.
So, how heavy is it?
It's also equivalent to one million grams (106 g), which is why it's sometimes called a megagram (Mg).
A great way to visualize a metric tonne is to think of a cube of water.
Imagine a cube that's one meter on each side—one meter tall, one meter wide, and one meter long. If you were to fill that cube with pure water, its mass would be exactly one metric tonne (1,000 kilograms).
This simple and direct relationship between volume (1 m3) and mass (1 tonne) is a perfect example of what makes the metric system so logical and practical.
The term "ton" can be confusing, as it refers to different units of weight depending on the location.
Understanding this distinction is crucial, especially in the context of international shipping.
Key takeaway: A US short ton is roughly 10% lighter than a metric tonne, whereas a UK long ton is slightly heavier. Always specify the unit to prevent costly errors!
Here are some quick reference conversions from Stone (st) to Metric Tonne (mt):
| Stones | Metric Tonnes |
|---|---|
| 0.000001 st | 6.35029318× 10-9 mt |
| 0.001 st | 0.00000635029318 mt |
| 0.1 st | 0.000635029318 mt |
| 1 st | 0.00635029318 mt |
| 2 st | 0.01270058636 mt |
| 3 st | 0.01905087954 mt |
| 4 st | 0.02540117272 mt |
| 5 st | 0.0317514659 mt |
| 6 st | 0.03810175908 mt |
| 7 st | 0.04445205226 mt |
| 8 st | 0.05080234544 mt |
| 9 st | 0.05715263862 mt |
| 10 st | 0.0635029318 mt |
| 20 st | 0.1270058636 mt |
| 30 st | 0.1905087954 mt |
| 40 st | 0.2540117272 mt |
| 50 st | 0.317514659 mt |
| 100 st | 0.635029318 mt |
| 1000 st | 6.35029318 mt |
| 10000 st | 63.5029318 mt |
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