---
title: "Grams to Tonnes — g to t converter"
description: "1 gram = 0.000001 tonnes. Convert grams to tonnes with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/grams-to-tonnes/
site: "At One Place"
---

# Grams to tonnes

**1 gram in tonnes: 1 g = 0.000001 t**

t = g × 0.000001

To convert grams to tonnes, multiply by 0.000001. The table below gives the values people look up most often, and the converter works for any number.

## Grams to tonnes table

*Common gram values converted to tonnes.*

| Grams | Tonnes |
| --- | --- |
| 1 g | 0.000001 |
| 2 g | 0.000002 |
| 3 g | 0.000003 |
| 4 g | 0.000004 |
| 5 g | 0.000005 |
| 10 g | 0.00001 |
| 15 g | 0.000015 |
| 20 g | 0.00002 |
| 25 g | 0.000025 |
| 30 g | 0.00003 |
| 40 g | 0.00004 |
| 50 g | 0.00005 |
| 75 g | 0.000075 |
| 100 g | 0.0001 |
| 250 g | 0.00025 |
| 500 g | 0.0005 |
| 1,000 g | 0.001 |

## How the conversion works

The relationship is t = g × 0.000001. Both units measure mass, so the conversion is a fixed factor that never changes.

> Tonne: Also called a metric ton.

## Common questions

### How many tonnes are in one gram?

One gram equals 0.000001 tonnes. t = g × 0.000001.

### How do you convert grams to tonnes?

Use t = g × 0.000001. So 10 g is 0.00001 t.

### How many grams are in one tonne?

One tonne equals 1,000,000 grams, which is the reverse of the conversion above.

### Is there more than one kind of tonne?

Also called a metric ton.

## Related pages

- [Tonnes to Grams](https://atoneplace.net/convert/tonnes-to-grams/)
- [Grams to Kilograms](https://atoneplace.net/convert/grams-to-kg/)
- [Grams to Milligrams](https://atoneplace.net/convert/grams-to-mg/)
- [Grams to Pounds](https://atoneplace.net/convert/grams-to-lbs/)
- [Grams to Ounces](https://atoneplace.net/convert/grams-to-oz/)
- [Grams to Stone](https://atoneplace.net/convert/grams-to-stone/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)