Convert Momme to Ton (long, UK)
Convert mommes to tons (long, uk) instantly. 1 momme = 3.690774e-6 ton (long, uk) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Ton (long, UK) to Momme converter for the reverse conversion.
Units explained
Momme
The momme (mom) equals 3.75 grams.
A traditional Japanese mass unit (Japanese 'monme').
Pearls, and as the standard weight grade for silk fabric.
Part of the traditional Japanese shakkanho system.
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.
Momme to Ton (long, UK) conversion formula
Note: this conversion uses a generally accepted modern value. Historical and regional definitions of this unit varied across times and places.
The relationship between mommes and tons (long, uk):
To convert mommes to tons (long, uk), multiply the value in mommes by 3.690774e-6. To reverse, multiply tons (long, uk) by 270945.8423466667.
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 Momme converter for the reverse direction.
Step-by-step: convert mommes to tons (long, uk)
- Write down the value in mommes (mom).
- Multiply that value by the factor 3.690774e-6.
- The product is the equivalent value in tons (long, uk) (long tn).
- To reverse, multiply the ton (long, uk) value by 270945.8423466667.
Worked examples
Example 1 — Convert 1 mom to long tn:
1 × 3.690774e-6 = 3.690774e-6 long tn
Example 2 — Convert 100 mom to long tn:
100 × 3.690774e-6 = 0.0003690774 long tn
Real-world example — Architectural to geographic scale
A 100,000-momme 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 mom × 3.690774e-6 = 0.3690774479 long tn
Real-world example — Small to geographic-scale
100,000 mommes 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 mom × 3.690774e-6 = 0.3690774479 long tn
Momme to Ton (long, UK) conversion table
Standard reference values for converting mommes to tons (long, uk):
| Momme [mom] | Ton (long, UK) [long tn] |
|---|---|
| 0.01 | 3.690774e-8 |
| 0.1 | 3.690774e-7 |
| 1 | 3.690774e-6 |
| 2 | 7.381549e-6 |
| 3 | 1.107232e-5 |
| 4 | 1.47631e-5 |
| 5 | 1.845387e-5 |
| 10 | 3.690774e-5 |
| 20 | 7.381549e-5 |
| 30 | 0.0001107232 |
| 40 | 0.000147631 |
| 50 | 0.0001845387 |
| 100 | 0.0003690774 |
| 500 | 0.0018453872 |
| 1000 | 0.0036907745 |
Frequently asked questions
How many tons (long, uk) is 1 momme?
How do I convert mommes to tons (long, uk)?
How do I convert tons (long, uk) back to mommes?
How many tons (long, uk) is 100 mommes?
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Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 mom = 3.690774e-6 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 Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.