Convert Carats to Short Tons
1 carat (ct) equals 2.204622622 × 10⁻⁷ short tons (ton (US)).
1 ct = 2.204622622e-7 ton (US)
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk carat to short ton converter to paste a column from Excel.
How to Convert Carat to Short Ton
- 1 ct = 2.204622622 × 10⁻⁷ ton (US)
- 1 ton (US) = 4535923.7 ct
- Example: convert 15 ct to ton (US): 15 ct = 15 × 2.204622622 × 10⁻⁷ ton (US) = 0.000003306933933 ton (US)
Reference conditions. ton (US): Avoirdupois system: 1 lb = 16 oz = 7000 grains = 0.45359237 kg exactly (1959 agreement).
Formula
ton (US) = ct × 2.204622621849 × 10⁻⁷
or ton (US) = ct ÷ 4535923.7
Derivation from SI units:
- 1 ct = 200 mg (metric carat, exact)
- 1 short ton = 2000 lb = 907.18474 kg (exact)
- 1 ct = 0.0002 kg ÷ 907.18474 kg per ton (US) = 2.204622621849 × 10⁻⁷ ton (US)
Both units are defined exactly, so the factor is exact. Carat definition: carat; Short Ton definition: short ton.
Worked examples
- A reading of 0.75 ct converts to 1.653466966 × 10⁻⁷ ton (US).
0.75 ct × 2.204622622 × 10⁻⁷ = 1.653466966 × 10⁻⁷ ton (US) - A value of 3 ct is 6.613867866 × 10⁻⁷ ton (US).
3 ct × 2.204622622 × 10⁻⁷ = 6.613867866 × 10⁻⁷ ton (US)
Carat to Short Ton conversion table
| Carats (ct) | Short Tons (ton (US)) |
|---|---|
| 0.1 ct | 2.204622622 × 10⁻⁸ ton (US) |
| 0.25 ct | 5.511556555 × 10⁻⁸ ton (US) |
| 0.5 ct | 1.102311311 × 10⁻⁷ ton (US) |
| 0.75 ct | 1.653466966 × 10⁻⁷ ton (US) |
| 1 ct | 2.204622622 × 10⁻⁷ ton (US) |
| 1.5 ct | 3.306933933 × 10⁻⁷ ton (US) |
| 2 ct | 4.409245244 × 10⁻⁷ ton (US) |
| 3 ct | 6.613867866 × 10⁻⁷ ton (US) |
| 5 ct | 0.000001102311311 ton (US) |
| 10 ct | 0.000002204622622 ton (US) |
| 100 ct | 0.00002204622622 ton (US) |
Where it's used
Carats are used for diamonds and gemstones, while short tons appear in US truck, trailer and vehicle ratings. Both measure mass (commonly called weight), so the conversion is a fixed factor.
Carat to other weight and mass units
| Conversion | 1 ct equals |
|---|---|
| carat to kilogram | 0.0002 kg |
| carat to gram | 0.2 g |
| carat to milligram | 200 mg |
| carat to microgram | 200000 µg |
| carat to metric ton | 2 × 10⁻⁷ t |
| carat to pound | 0.0004409245244 lb |
| carat to ounce | 0.00705479239 oz |
| carat to stone | 0.00003149460888 st |
| carat to short ton | 2.204622622 × 10⁻⁷ ton (US) |
| carat to long ton | 1.968413055 × 10⁻⁷ ton (UK) |
| carat to grain | 3.086471671 gr |
| carat to troy ounce | 0.006430149314 oz t |
Frequently asked questions
How many short tons are in 1 carat?
1 ct = 2.204622622 × 10⁻⁷ ton (US).
How do I convert carats to short tons?
Multiply the value in ct by 2.204622622 × 10⁻⁷, or divide it by 4535923.7. For example, 15 ct × 2.204622622 × 10⁻⁷ = 0.000003306933933 ton (US).
Is the ct to ton (US) conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "carat, metric".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "ton, short (2000 lb)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Carats to Short Tons. Retrieved October 17, 2026, from https://scientificconverters.com/mass/carats-to-short-tons/
IEEE
Scientific Converters, "Convert Carats to Short Tons," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/mass/carats-to-short-tons/