How many ounces are in a metric tonne?

One metric tonne is approximately 35,273.9619 avoirdupois ounces (about 35,274 oz). The converter uses 1 oz = 0.000028349523125 metric tonnes.

Does this use avoirdupois ounces or troy ounces?

This tool uses the standard avoirdupois ounce (28.349523125 g), which is the common ounce used for everyday weights. Troy ounces (used for precious metals) are slightly heavier at 31.1034768 g.

What is a metric tonne?

A metric tonne (also spelled metric ton, symbol t) equals exactly 1,000 kilograms or 1,000,000 grams. It is the SI-coherent unit of large mass and is different from the US short ton (907 kg) or the UK long ton (1,016 kg).

Why does the result look like a very small number?

An ounce is tiny compared to a tonne. You need roughly 35,274 ounces to make one tonne, so most everyday ounce values convert to a small decimal in tonnes. Try entering 35274 to see a result close to 1 tonne.

Can I convert tonnes back to ounces?

Yes. Click the Swap button to flip the direction and enter a tonne value instead.

Ounces to Tonnes Converter

Type a value in ounces and instantly see the equivalent in metric tonnes.

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Ounces (oz) Metric Tonnes (t)

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Metric Tonnes — t

Quick Reference — Ounces to Metric Tonnes

Ounces (oz)	Metric Tonnes (t)

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Summary

This tool converts a mass value from ounces (oz) to metric tonnes (t) instantly in your browser. One ounce equals exactly 0.000028349523125 metric tonnes, so the converter multiplies your input by that factor and displays the result rounded to 10 significant figures. No sign-in or server call is required.

How it works

Enter a mass value in ounces in the input field.
The converter multiplies your value by 0.000028349523125 (the exact SI factor).
The result in metric tonnes appears immediately below.
Use the Copy button to copy the result to your clipboard.
Click Swap to reverse the conversion and convert tonnes back to ounces.

Use cases

Convert large avoirdupois-ounce shipping weights to metric tonnes for bulk orders.
Check shipping freight weights when your scale reads in ounces but manifests require tonnes.
Convert recipe or lab measurements between imperial and metric mass units.
Verify unit conversions in spreadsheets or engineering calculations.
Quickly switch between ounces and tonnes when reading commodity price quotes.
Assist students learning SI and imperial unit conversion in science courses.

Frequently Asked Questions

Last updated: 2026-10-05 · Reviewed by Nham Vu