---
title: "Ounces to Tonnes — oz to t converter"
description: "1 ounce = 0.00002835 tonnes. Convert ounces to tonnes with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/oz-to-tonnes/
site: "At One Place"
---

# Ounces to tonnes

**1 ounce in tonnes: 1 oz = 0.00002835 t**

t = oz × 0.000028349523

To convert ounces to tonnes, multiply by 0.000028349523. The table below gives the values people look up most often, and the converter works for any number.

## Ounces to tonnes table

*Common ounce values converted to tonnes.*

| Ounces | Tonnes |
| --- | --- |
| 1 oz | 0.00002835 |
| 2 oz | 0.0000567 |
| 3 oz | 0.00008505 |
| 4 oz | 0.0001134 |
| 5 oz | 0.0001417 |
| 10 oz | 0.0002835 |
| 15 oz | 0.0004252 |
| 20 oz | 0.000567 |
| 25 oz | 0.0007087 |
| 30 oz | 0.0008505 |
| 40 oz | 0.001134 |
| 50 oz | 0.0014175 |
| 75 oz | 0.0021262 |
| 100 oz | 0.002835 |
| 250 oz | 0.0070874 |
| 500 oz | 0.014175 |
| 1,000 oz | 0.02835 |

## How the conversion works

The relationship is t = oz × 0.000028349523. Both units measure mass, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

> Tonne: Also called a metric ton.

## Common questions

### How many tonnes are in one ounce?

One ounce equals 0.00002835 tonnes. t = oz × 0.000028349523.

### How do you convert ounces to tonnes?

Use t = oz × 0.000028349523. So 10 oz is 0.0002835 t.

### How many ounces are in one tonne?

One tonne equals 35,273.962 ounces, 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 Ounces](https://atoneplace.net/convert/tonnes-to-oz/)
- [Ounces to Kilograms](https://atoneplace.net/convert/oz-to-kg/)
- [Ounces to Grams](https://atoneplace.net/convert/oz-to-grams/)
- [Ounces to Milligrams](https://atoneplace.net/convert/oz-to-mg/)
- [Ounces to Pounds](https://atoneplace.net/convert/oz-to-lbs/)
- [Ounces to Stone](https://atoneplace.net/convert/oz-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/)