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Convert Mass from Stone to Metric Tonne (st to mt)
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Stone to Metric Tonne Conversion Formula
To convert from Stone (st) to Metric Tonne (mt), use the following formula:
With is the ratio between the base units Gram (g) and Pound (lb).
Example
Let's convert 5 Stone (st) to Metric Tonne (mt).
Using the formula:
Therefore, 5 Stone (st) is equal to Metric Tonne (mt).
What is a Stone (st)?
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.
How Many Kilograms are in a Stone?
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.
Why is Body Weight Measured in Stone?
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."
Where Did the Stone Unit Come From?
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.
What is a Metric Tonne (mt)?
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?
- A metric tonne is exactly 1,000 kilograms.
- This is equal to about 2,204.6 pounds.
It's also equivalent to one million grams (10⁶ g), which is why it's sometimes called a megagram (Mg).
The Simple Link Between a Tonne and Water
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.
Tonne vs. Ton: What's the Difference?
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.
- Metric Tonne (t): The standard international unit. It's 1,000 kg or 2,204.6 lbs.
- Short Ton (US Ton): Commonly used in the United States, equal to exactly 2,000 pounds (about 907.2 kilograms).
- Long Ton (UK Ton): A traditional British unit of weight, equal to 2,240 lbs (about 1,016 kg).
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!
What is the imperial system?
What is the metric system?
Stone to Metric Tonne Conversion Table
Here are some quick reference conversions from Stone (st) to Metric Tonne (mt):
| Stones | Metric Tonnes |
|---|---|
| 0.000001 st | mt |
| 0.001 st | mt |
| 0.1 st | mt |
| 1 st | mt |
| 2 st | mt |
| 3 st | mt |
| 4 st | mt |
| 5 st | mt |
| 6 st | mt |
| 7 st | mt |
| 8 st | mt |
| 9 st | mt |
| 10 st | mt |
| 20 st | mt |
| 30 st | mt |
| 40 st | mt |
| 50 st | mt |
| 100 st | mt |
| 1000 st | mt |
| 10000 st | mt |
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