Ounces to Tons
Convert ounces (oz) to tons (t). Both measure mass and weight, and the conversion comes up in cooking, shipping, fitness work.
The Formula
``
tons = ounces × 0.000028349523125
ounces = tons × 35273.9619496
`
One ounce is 2.8350e-5 tons, and one ton is 35,273.96 ounces.
Conversion Table
| Ounces | Tons |
|---|---|
| 1 oz | 2.8350e-5 t |
| 2 oz | 5.6699e-5 t |
| 5 oz | 1.4175e-4 t |
| 10 oz | 2.8350e-4 t |
| 25 oz | 7.0874e-4 t |
| 50 oz | 0.001417 t |
| 100 oz | 0.002835 t |
| 500 oz | 0.014175 t |
| 1,000 oz | 0.02835 t |
The Other Direction
| Tons | Ounces |
|---|---|
| 1 t | 35,273.96 oz |
| 2 t | 70,547.92 oz |
| 5 t | 176,369.81 oz |
| 10 t | 352,739.62 oz |
| 25 t | 881,849.05 oz |
| 50 t | 1,763,698.1 oz |
| 100 t | 3,527,396.19 oz |
| 500 t | 17,636,980.97 oz |
| 1,000 t | 35,273,961.95 oz |
What Each Unit Is
Ounces (oz) — one sixteenth of a pound, or exactly 28.349523125 grams. From uncia, one twelfth — of the Roman libra, before avoirdupois moved it to one sixteenth.
Tons (t) — here the metric tonne: exactly 1,000 kilograms. From the tun, a large wine cask, whose weight became a trade standard.
A Sense of Scale
A slice of bread is about 1 oz- A tennis ball is 2 oz
- US recipes use ounces for dry goods
- A small car is about 1.5 t
- A cubic metre of water is 1 t
- Shipping freight is priced per tonne
Precision
The factor 0.000028349523125 is rounded. For engineering work carry more digits than the table above, and round only at the end — rounding at each step compounds.
Watch Out For
- A fluid ounce measures volume, not mass, and the two are only interchangeable for water by coincidence of scale.
- Three different tons exist: metric (1,000 kg), US short (907 kg) and UK long (1,016 kg). This converter uses the metric tonne.
In Code
`javascript
const ounceToTon = (value) => value * 0.000028349523125;
``
Where This Conversion Comes Up
- Cooking
- Shipping
- Fitness
- Medicine
- Manufacturing
How Many Decimals Do You Need?
Rounding the factor costs accuracy, and how much depends on the factor. Converting 137 oz with the factor truncated at each decimal place:
| Decimals kept | Factor | 137 oz becomes | Error |
|---|---|---|---|
| 0 | 0 | 0 | 100.0000% |
| 1 | 0 | 0 | 100.0000% |
| 2 | 0 | 0 | 100.0000% |
| 3 | 0 | 0 | 100.0000% |
| 4 | 0 | 0 | 100.0000% |
The right number of significant figures is set by your input, not by the converter. If you measured ounces to three significant figures, the answer in tons is only good to three — writing more digits claims precision the measurement never had.