Calculate grams to metric tons (tonnes) and back, using 1 metric ton = 1,000,000 grams, for any gram or metric ton value.
Assumptions Assumptions
- Conversions are between units of mass: grams and metric tonnes.
- Exact factors: 1 metric tonne (t) = 1,000 kilograms = 1,000,000 grams.
- Metric tonnes are distinct from US short tons and UK long tons. Magnetic units are not included.
- Enter a nonnegative mass; zero is supported.
When to Use This Calculator
- Converting a mass reported in grams to metric tonnes.
- Comparing mass quantities reported in grams, kilograms and tonnes.
- Lab, shipping and material quantities requiring mass-unit conversion.
Input Definitions
- Mass in grams — enter grams, kilograms or milligrams in the grams-to-tonnes direction.
- Mass in tonnes — enter metric tonnes or kilograms in the tonnes-to-grams direction.
- Conversions — tonnes = grams ÷ 1,000,000; grams = tonnes × 1,000,000. The standard tonne symbol is t; mT is millitesla.
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Grams to Metric Tons Formula
Metric Tons = Grams / 1,000,000
Grams = Metric Tons x 1,000,000
Where:
Grams (g) is the mass you are starting with. Metric Tons (t), also written as tonnes, is the target unit. One metric ton equals exactly 1,000,000 grams, so you divide grams by one million to get metric tons, and multiply metric tons by one million to get grams. The metric ton is a unit of mass in the metric system and is not the same as the US short ton or the UK long ton.
Common Gram to Metric Ton Values
The table below lists frequently converted values so you can check a result quickly.
| Grams (g) | Metric Tons (t) |
|---|---|
| 1,000 | 0.001 |
| 10,000 | 0.01 |
| 100,000 | 0.1 |
| 500,000 | 0.5 |
| 1,000,000 | 1 |
| 2,500,000 | 2.5 |
| 10,000,000 | 10 |
Because each metric ton holds one million grams, even large gram figures convert to small metric ton values.
Example
Suppose you have 4,500,000 grams of material and want the mass in metric tons. Divide the grams by 1,000,000:
4,500,000 / 1,000,000 = 4.5 metric tons.
To go the other way, suppose you have 0.75 metric tons and want grams. Multiply by 1,000,000:
0.75 x 1,000,000 = 750,000 grams.
FAQ
How many grams are in a metric ton?
There are exactly 1,000,000 grams in one metric ton, because a metric ton is 1,000 kilograms and each kilogram is 1,000 grams.
Is a metric ton the same as a tonne?
Yes. The metric ton and the tonne refer to the same unit of mass equal to 1,000 kilograms. They are not the same as the US short ton (about 907,185 grams) or the UK long ton (about 1,016,047 grams).
How do you convert grams to metric tons?
Divide the number of grams by 1,000,000. For example, 250,000 grams divided by 1,000,000 equals 0.25 metric tons.
