Carat to Long Ton (UK) Converter
Convert Carat (ct) to Long Ton (UK) (long ton) instantly. 1 ct = 1.968413e-7 long ton.
Mass Converter
26 units available
1 ct = 1.968413e-7 long ton
Formula:
long ton = ct × 1.968413e-7With your value: 1 ct = 1.968413e-7 long ton
How big is that?
Everyday references on a logarithmic scale, all expressed in carat so you can sanity-check the result.
Other Carat to Long Ton (UK) conversions
Carat to Long Ton (UK) Conversion Table
| Carat (ct) | Long Ton (UK) (long ton) |
|---|---|
| 0.5 | 9.842065e-8 |
| 1 | 1.968413e-7 |
| 2 | 3.936826e-7 |
| 5 | 9.842065e-7 |
| 10 | 1.968413e-6 |
| 15 | 2.952620e-6 |
| 20 | 3.936826e-6 |
| 25 | 4.921033e-6 |
| 50 | 9.842065e-6 |
| 100 | 1.968413e-5 |
| 250 | 4.921033e-5 |
| 500 | 9.842065e-5 |
| 1000 | 0.000197 |
Long Ton (UK) to Carat Conversion Table
| Long Ton (UK) (long ton) | Carat (ct) |
|---|---|
| 0.5 | 2,540,117.272 |
| 1 | 5,080,234.544 |
| 2 | 10,160,469.088 |
| 5 | 25,401,172.72 |
| 10 | 50,802,345.44 |
| 15 | 76,203,518.16 |
| 20 | 101,604,690.88 |
| 25 | 127,005,863.6 |
| 50 | 254,011,727.2 |
| 100 | 508,023,454.4 |
| 250 | 1,270,058,636 |
| 500 | 2,540,117,272 |
| 1000 | 5,080,234,544 |
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.
Carat (ct)
Mass
The metric carat is exactly 200 mg, agreed internationally in 1907.
National Institute of Standards and Technology (US) · 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 Carat to Long Ton (UK)
To convert from Carat (ct) to Long Ton (UK) (long ton), multiply the value by 1.968413e-7.
Formula: long ton = ct × 1.968413e-7
Reverse: ct = long ton × 5,080,234.544
Step-by-Step Example
- Start with your value in Carat. For example: 5 ct
- Multiply by the conversion factor: 5 x 1.968413e-7
- The result is: 9.842065e-7 long ton
About Carat
The carat equals 200 milligrams and is the standard unit for measuring gemstone weight.
Fun Fact: The word "carat" comes from the carob seed, which was used as a balance weight in ancient gem trading.
Common uses: gemstones, diamonds, jewelry.
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 Carat?
There are exactly 1.968413e-7 Long Ton (UK) in 1 Carat. This means the conversion factor from Carat to Long Ton (UK) is 1.968413e-7.
What is the formula to convert Carat to Long Ton (UK)?
The formula to convert Carat to Long Ton (UK) is: long ton = ct × 1.968413e-7. For example, to convert 10 Carat to Long Ton (UK), you would multiply 10 by 1.968413e-7.
What is a Carat?
The carat equals 200 milligrams and is the standard unit for measuring gemstone weight.
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 Carat?
The Carat is commonly used in gemstones, diamonds, jewelry.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Carat to Long Ton (UK) converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/carat-to-long_ton