---
title: "18 oz to t = 0.0005103 t"
description: "18 ounces is 0.0005103 tonnes. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/18-oz-to-tonnes/
site: "At One Place"
---

# 18 oz to t

**18 ounces in tonnes: 18 oz = 0.0005103 t**

t = oz × 0.000028349523

18 ounces is 0.0005103 tonnes. To get there, multiply by 0.000028349523.

## Values either side

*Ounces near 18, converted to tonnes.*

| Ounces | Tonnes |
| --- | --- |
| 14 oz | 0.0003969 |
| 15 oz | 0.0004252 |
| 16 oz | 0.0004536 |
| 17 oz | 0.0004819 |
| 18 oz ← | 0.0005103 |
| 19 oz | 0.0005386 |
| 20 oz | 0.000567 |
| 21 oz | 0.0005953 |
| 22 oz | 0.0006237 |

## 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

### What is 18 oz in tonnes?

18 oz is 0.0005103 t.

### How do you convert ounces to tonnes?

Multiply by 0.000028349523.

## Related pages

- [Ounces to tonnes](https://atoneplace.net/convert/oz-to-tonnes/)
- [18 t to oz](https://atoneplace.net/convert/18-tonnes-to-oz/)
- [14 oz to t](https://atoneplace.net/convert/14-oz-to-tonnes/)
- [15 oz to t](https://atoneplace.net/convert/15-oz-to-tonnes/)
- [16 oz to t](https://atoneplace.net/convert/16-oz-to-tonnes/)
- [17 oz to t](https://atoneplace.net/convert/17-oz-to-tonnes/)
- [19 oz to t](https://atoneplace.net/convert/19-oz-to-tonnes/)
- [20 oz to t](https://atoneplace.net/convert/20-oz-to-tonnes/)
- [21 oz to t](https://atoneplace.net/convert/21-oz-to-tonnes/)
- [22 oz to t](https://atoneplace.net/convert/22-oz-to-tonnes/)

## 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/)