Grams to Metric Tonnes
Convert grams to metric tonnes instantly. 1 g = 1e-06 t. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert grams to metric tonnes
To convert grams to metric tonnes, divide by 1,000,000 (multiply by 1e-06). The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
t = g × 1e-06
Grams to Metric Tonnes conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Grams | Metric Tonnes |
|---|---|
| 1 g | 1e-06 t |
| 2 g | 2e-06 t |
| 3 g | 3e-06 t |
| 5 g | 5e-06 t |
| 10 g | 1e-05 t |
| 20 g | 2e-05 t |
| 25 g | 2.5e-05 t |
| 50 g | 5e-05 t |
| 100 g | 0.0001 t |
| 500 g | 0.0005 t |
| 1,000 g | 0.001 t |
What is a gram?
A thousandth of a kilogram, and the practical unit for cooking by weight.
What is a metric tonne?
1,000 kg. The standard tonne outside the United States.
The formula
t = g × 1e-06
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Grams to Metric Tonnes
- Type the number of grams you want to convert.
- Read the result in metric tonnes straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked metric tonnes to grams page.
Grams to Metric Tonnes — frequently asked questions
How many metric tonnes are in a gram?
One gram equals 1e-06 t. t = g × 1e-06
What is the formula to convert grams to metric tonnes?
The formula is t = g × 1e-06. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert metric tonnes back to grams?
Divide instead of multiplying: one metric tonne is 1,000,000 g. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this grams to metric tonnes free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the grams to metric tonnes.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 15, 2026 · Calculation runs client-side · No data collected · Report an error