---
title: "Tonnes to Grains — t to gr converter"
description: "1 tonne = 15,432,358 grains. Convert tonnes to grains with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/tonnes-to-grains/
site: "At One Place"
---

# Tonnes to grains

**1 tonne in grains: 1 t = 15,432,358 gr**

gr = t × 15,432,358.35

To convert tonnes to grains, multiply by 15,432,358.35. The table below gives the values people look up most often, and the converter works for any number.

## Tonnes to grains table

*Common tonne values converted to grains.*

| Tonnes | Grains |
| --- | --- |
| 1 t | 15,432,358 |
| 2 t | 30,864,717 |
| 3 t | 46,297,075 |
| 4 t | 61,729,433 |
| 5 t | 77,161,792 |
| 10 t | 154,323,580 |
| 15 t | 231,485,380 |
| 20 t | 308,647,170 |
| 25 t | 385,808,960 |
| 30 t | 462,970,750 |
| 40 t | 617,294,330 |
| 50 t | 771,617,920 |
| 75 t | 1,157,426,900 |
| 100 t | 1,543,235,800 |
| 250 t | 3,858,089,600 |
| 500 t | 7,716,179,200 |
| 1,000 t | 15,432,358,000 |

## How the conversion works

The relationship is gr = t × 15,432,358.35. Both units measure mass, so the conversion is a fixed factor that never changes.

> Tonne: Also called a metric ton.

## Common questions

### How many grains are in one tonne?

One tonne equals 15,432,358 grains. gr = t × 15,432,358.35.

### How do you convert tonnes to grains?

Use gr = t × 15,432,358.35. So 10 t is 154,323,580 gr.

### How many tonnes are in one grain?

One grain equals 6.48 × 10^-8 tonnes, which is the reverse of the conversion above.

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

Also called a metric ton.

## Related pages

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