A gram is one thousandth of a kilogram.
Grams to Metric tons Converter — g to t
Convert Gram (g) to Metric ton (t) using the exact conversion factor (1 gram = 0.000001 metric ton). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Grams to Metric tons converter
Converter
Mass/Weight Converter
Convert SI mass, imperial weight, jewelry, atomic, and astronomy mass units.
Context values
Some unit families need one extra value for a physically accurate result.
A metric ton is 1,000 kilograms.
Result = input x 0.001 / 1000.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams to Metric tons
Weight conversions between Gram and Metric ton come up constantly in everyday commerce, shipping, and cooking, since US packaging is usually labeled in pounds while most of the rest of the world uses kilograms. Gram is typically associated with standard small-mass unit worldwide, while Metric ton is typically associated with used worldwide except the US, which uses the short ton (2,000 lb).
Formula
metric tons = grams × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 gram equals 0.001 base units, and 1 metric ton equals 1000 base units, so dividing one by the other gives the direct gram-to-metric ton factor of 0.000001.
Simple example
1 g × 0.000001 = 0.000001 t
1 gram = 0.000001 metric tons.
Real-world example
50 g × 0.000001 = 0.00005 t
50 grams = 0.00005 metric tons.
Conversion table
| Gram (g) | Metric ton (t) |
|---|---|
| 1 g | 0.000001 t |
| 5 g | 0.000005 t |
| 10 g | 0.00001 t |
| 25 g | 0.000025 t |
| 50 g | 0.00005 t |
| 100 g | 0.0001 t |
Reverse conversion: Metric ton to Gram
0.000001 t × 1000000 = 1 g
0.000001 metric tons = 1 gram.
grams = metric tons × 1000000
For a page dedicated to this direction, see Metric ton to Gram.
Gram vs. Metric ton
| Aspect | Gram | Metric ton |
|---|---|---|
| Family | SI derived (metric prefix) unit | Non-SI unit accepted for use with SI (also called metric ton) |
| Typical use | Cooking and nutrition labeling worldwide (including in the US, alongside ounces) | International shipping and freight weight |
| Where it's used | Standard small-mass unit worldwide | Used worldwide except the US, which uses the short ton (2,000 lb) |
Understanding the Gram
Gram (g) measures mass. A gram is one-thousandth of a kilogram, the SI base unit of mass. It is classified as a SI derived (metric prefix) unit.
Where it's used: Standard small-mass unit worldwide
Uses of the Gram today
- Cooking and nutrition labeling worldwide (including in the US, alongside ounces)
- Precious metal and small-item weighing
- Scientific and laboratory measurement
History of the Gram
Originally defined in 1795 as the mass of one cubic centimeter of water, the gram follows directly from the kilogram (1/1000 of it) under the modern SI system, inheriting the kilogram's various historical and current definitions.
Historical origin. Gram was not the invention of a single named person; it developed through the process described above.
Understanding the Metric ton
Metric ton (t) measures mass. A tonne is exactly 1,000 kilograms. It is classified as a Non-SI unit accepted for use with SI (also called metric ton).
Where it's used: Used worldwide except the US, which uses the short ton (2,000 lb)
Tonne vs. US (short) ton vs. UK (long) ton. The metric tonne (1,000 kg ≈ 2,204.6 lb) is different from both the US short ton (2,000 lb ≈ 907.2 kg) and the UK long ton (2,240 lb ≈ 1,016 kg) — all three are used in different shipping and industrial contexts and should not be assumed interchangeable.
Uses of the Metric ton today
- International shipping and freight weight
- Industrial and commodity trade (steel, grain, shipping) worldwide
- Vehicle and cargo weight ratings outside the US
History of the Metric ton
The tonne follows directly from the kilogram via the standard 'kilo-' scaling by 1,000, adopted as a convenient large-mass unit alongside the metric system's spread through international trade and industry from the 19th century onward.
Historical origin. Metric ton was not the invention of a single named person; it developed through the process described above.
Gram — sources
- BIPM — The kilogram (SI base unit) — Basis for the gram as 1/1000 of the kilogram.
Metric ton — sources
- BIPM SI Brochure — Non-SI units accepted for use with SI — Lists the tonne among accepted non-SI mass units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many metric tons are in 1 gram?
1 gram equals 0.000001 metric tons, using the exact defined conversion factor rather than an estimate.
How do I convert gram to metric ton?
Multiply the gram value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert metric ton back to gram?
Use the reverse factor: 1 metric ton equals 1,000,000 grams. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram?
Gram (g) measures mass. A gram is one-thousandth of a kilogram, the SI base unit of mass. It is classified as a SI derived (metric prefix) unit.
What is a metric ton?
Metric ton (t) measures mass. A tonne is exactly 1,000 kilograms. It is classified as a Non-SI unit accepted for use with SI (also called metric ton).
Is the gram to metric ton conversion exact?
Yes. A tonne is exactly 1,000 kilograms. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
What is the difference between tonne vs. us (short) ton vs. uk (long) ton?
The metric tonne (1,000 kg ≈ 2,204.6 lb) is different from both the US short ton (2,000 lb ≈ 907.2 kg) and the UK long ton (2,240 lb ≈ 1,016 kg) — all three are used in different shipping and industrial contexts and should not be assumed interchangeable.
Where is the gram still used today?
Standard small-mass unit worldwide