Convert Ounce to Ton (long, UK)
Convert ounces to tons (long, uk) instantly. 1 ounce = 2.790179e-5 ton (long, uk) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Ton (long, UK) to Ounce converter for the reverse conversion.
Units explained
Ounce
The (avoirdupois) ounce (oz) equals one-sixteenth of a pound, about 28.35 grams.
From Latin 'uncia', meaning a twelfth part.
US food portions, postal weights, and boxing weight classes.
Standardized as 1/16 of the international pound from 1959.
Ton (long, UK)
The long (UK) ton equals 2,240 pounds, about 1,016 kilograms.
The British imperial ton, equal to 20 long hundredweight.
UK shipping and historical heavy industry.
Standardized within the British imperial system.
Ounce to Ton (long, UK) conversion formula
The relationship between ounces and tons (long, uk):
To convert ounces to tons (long, uk), multiply the value in ounces by 2.790179e-5. To reverse, multiply tons (long, uk) by 35840.0000316055.
How to use this converter
Type a value into the calculator. The result in tons (long, uk) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Ton (long, UK) to Ounce converter for the reverse direction.
Step-by-step: convert ounces to tons (long, uk)
- Write down the value in ounces (oz).
- Multiply that value by the factor 2.790179e-5.
- The product is the equivalent value in tons (long, uk) (long tn).
- To reverse, multiply the ton (long, uk) value by 35840.0000316055.
Worked examples
Example 1 — Convert 1 oz to long tn:
1 × 2.790179e-5 = 2.790179e-5 long tn
Example 2 — Convert 100 oz to long tn:
100 × 2.790179e-5 = 0.0027901786 long tn
Real-world example — Small to geographic-scale
100,000 ounces equals one ton (long, uk) — a useful conversion when small-scale survey diagrams must be related to road-network distances on a different map.
100000 oz × 2.790179e-5 = 2.790178569 long tn
Real-world example — Architectural to geographic scale
A 100,000-ounce measurement equals one ton (long, uk). The five-order-of-magnitude scale change comes up in mapping work where architectural site plans must be related to road-network maps.
100000 oz × 2.790179e-5 = 2.790178569 long tn
Ounce to Ton (long, UK) conversion table
Standard reference values for converting ounces to tons (long, uk):
| Ounce [oz] | Ton (long, UK) [long tn] |
|---|---|
| 0.01 | 2.790179e-7 |
| 0.1 | 2.790179e-6 |
| 1 | 2.790179e-5 |
| 2 | 5.580357e-5 |
| 3 | 8.370536e-5 |
| 4 | 0.0001116071 |
| 5 | 0.0001395089 |
| 10 | 0.0002790179 |
| 20 | 0.0005580357 |
| 30 | 0.0008370536 |
| 40 | 0.0011160714 |
| 50 | 0.0013950893 |
| 100 | 0.0027901786 |
| 500 | 0.0139508928 |
| 1000 | 0.0279017857 |
Frequently asked questions
How many tons (long, uk) is 1 ounce?
How do I convert ounces to tons (long, uk)?
How do I convert tons (long, uk) back to ounces?
How many tons (long, uk) is 100 ounces?
Popular weight unit conversions
Convert Ounce to other weight units
Show all Ounce conversions
Metric / SI (18 units)
Avoirdupois (14 units)
Troy & Apothecary (10 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 oz = 2.790179e-5 long tn) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.