Convert Ounce to Tonne
Turn Ounces into Tonnes in an instant. Type a value below to get an accurate oz → t result, with the formula and a quick-reference table.
1 oz = 0.000028349523 t
Quick answer: 1 Ounce = 0.000028349523 Tonne
Ounce to Tonne conversion table
| Ounce (oz) | Tonne (t) |
|---|---|
| 1 oz | 0.000028349523 t |
| 2 oz | 0.000056699046 t |
| 5 oz | 0.00014174762 t |
| 10 oz | 0.00028349523 t |
| 20 oz | 0.00056699046 t |
| 50 oz | 0.0014174762 t |
| 100 oz | 0.0028349523 t |
| 500 oz | 0.014174762 t |
| 1,000 oz | 0.028349523 t |
How to convert Ounce to Tonne
To convert Ounces to Tonnes, multiply the value by 0.000028349523.
- Take your measurement in Ounces.
- Multiply it by 0.000028349523 — the number of Tonnes in one Ounce.
- The result is the same amount, expressed in Tonnes.
To go the other way, multiply Tonnes by 35,273.962 — or simply divide by 0.000028349523.
For example, one pound is about 16 oz, which is 0.00045359237 t.
About Ounce and Tonne
An ounce is an imperial unit of mass equal to about 28.35 grams, or one-sixteenth of a pound. It is common in the United States for food packaging, postage and cooking.
A tonne (metric ton) is 1,000 kilograms. It is used for vehicles, freight and industrial quantities.
The Ounce is a imperial / US customary unit while the Tonne comes from the metric system — which is exactly why this conversion comes up so often. One Ounce equals 0.000028349523 Tonnes.
Other weight & mass conversions
Frequently asked questions
How many Tonnes are in a Ounce?
1 Ounce equals 0.000028349523 Tonne (oz → t). To convert any amount, multiply the number of Ounces by 0.000028349523.
How do I convert Ounce to Tonne?
Enter the number of Ounces in the converter above and read the result in Tonnes. It applies the exact oz → t factor instantly, with full precision.
Is the Ounce to Tonne converter free?
Yes — it is completely free and unlimited, needs no sign-up, and runs right in your browser, so it is instant and private.
Is the conversion accurate?
Yes. It uses the internationally defined weight & mass factors and full floating-point precision, then rounds the display to a clean, readable number.