Grain to Long Ton (UK) Converter
Convert Grain (gr) to Long Ton (UK) (long ton) instantly. 1 gr = 6.377551e-8 long ton.
Mass Converter
26 units available
1 gr = 6.377551e-8 long ton
Formula:
long ton = gr × 6.377551e-8With your value: 1 gr = 6.377551e-8 long ton
How big is that?
Everyday references on a logarithmic scale, all expressed in grain so you can sanity-check the result.
Other Grain to Long Ton (UK) conversions
Grain to Long Ton (UK) Conversion Table
| Grain (gr) | Long Ton (UK) (long ton) |
|---|---|
| 0.5 | 3.188776e-8 |
| 1 | 6.377551e-8 |
| 2 | 1.275510e-7 |
| 5 | 3.188776e-7 |
| 10 | 6.377551e-7 |
| 15 | 9.566327e-7 |
| 20 | 1.275510e-6 |
| 25 | 1.594388e-6 |
| 50 | 3.188776e-6 |
| 100 | 6.377551e-6 |
| 250 | 1.594388e-5 |
| 500 | 3.188776e-5 |
| 1000 | 6.377551e-5 |
Long Ton (UK) to Grain Conversion Table
| Long Ton (UK) (long ton) | Grain (gr) |
|---|---|
| 0.5 | 7,840,000 |
| 1 | 15,680,000 |
| 2 | 31,360,000 |
| 5 | 78,400,000 |
| 10 | 156,800,000 |
| 15 | 235,200,000 |
| 20 | 313,600,000 |
| 25 | 392,000,000 |
| 50 | 784,000,000 |
| 100 | 1,568,000,000 |
| 250 | 3,920,000,000 |
| 500 | 7,840,000,000 |
| 1000 | 15,680,000,000 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Grain (gr)
Mass
Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Long Ton (UK) (long ton)
Mass
Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Grain to Long Ton (UK)
To convert from Grain (gr) to Long Ton (UK) (long ton), multiply the value by 6.377551e-8.
Formula: long ton = gr × 6.377551e-8
Reverse: gr = long ton × 15,680,000.000000002
Step-by-Step Example
- Start with your value in Grain. For example: 5 gr
- Multiply by the conversion factor: 5 x 6.377551e-8
- The result is: 3.188776e-7 long ton
About Grain
The grain equals exactly 64.79891 milligrams and was originally the weight of a single barleycorn. It is still the standard unit for bullets, propellant and arrows.
Common uses: ammunition, archery, pharmacy (historic).
About Long Ton (UK)
The long ton (imperial ton) equals 2,240 pounds or 1,016.0469088 kg, and remains in use for shipping displacement.
Common uses: shipping, UK industry (historic).
Frequently Asked Questions
How many Long Ton (UK) are in 1 Grain?
There are exactly 6.377551e-8 Long Ton (UK) in 1 Grain. This means the conversion factor from Grain to Long Ton (UK) is 6.377551e-8.
What is the formula to convert Grain to Long Ton (UK)?
The formula to convert Grain to Long Ton (UK) is: long ton = gr × 6.377551e-8. For example, to convert 10 Grain to Long Ton (UK), you would multiply 10 by 6.377551e-8.
What is a Grain?
The grain equals exactly 64.79891 milligrams and was originally the weight of a single barleycorn. It is still the standard unit for bullets, propellant and arrows.
What is a Long Ton (UK)?
The long ton (imperial ton) equals 2,240 pounds or 1,016.0469088 kg, and remains in use for shipping displacement.
What are the common uses of Grain?
The Grain is commonly used in ammunition, archery, pharmacy (historic).
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Grain to Long Ton (UK) converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/grain-to-long_ton