Convert Pounds to Carats
1 pound (lb) equals 2267.96185 carats (ct).
1 lb = 2267.96185 ct
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk pound to carat converter to paste a column from Excel.
How to Convert Pound to Carat
- 1 lb = 2267.96185 ct
- 1 ct = 0.0004409245244 lb
- Example: convert 15 lb to ct: 15 lb = 15 × 2267.96185 ct = 34019.42775 ct
Reference conditions. lb: Avoirdupois system: 1 lb = 16 oz = 7000 grains = 0.45359237 kg exactly (1959 agreement).
Formula
ct = lb × 2267.96185
Derivation from SI units:
- 1 lb = 0.45359237 kg (exact, 1959 international agreement)
- 1 ct = 200 mg (metric carat, exact)
- 1 lb = 0.45359237 kg ÷ 0.0002 kg per ct = 2267.96185 ct
Both units are defined exactly, so the factor is exact. Pound definition: pound; Carat definition: carat.
Worked examples
- A reading of 20 lb converts to 45359.237 ct.
20 lb × 2267.96185 = 45359.237 ct - A value of 140 lb is 317514.659 ct.
140 lb × 2267.96185 = 317514.659 ct
Pound to Carat conversion table
| Pounds (lb) | Carats (ct) |
|---|---|
| 0.25 lb | 566.9904625 ct |
| 0.5 lb | 1133.980925 ct |
| 1 lb | 2267.96185 ct |
| 2 lb | 4535.9237 ct |
| 3 lb | 6803.88555 ct |
| 5 lb | 11339.80925 ct |
| 10 lb | 22679.6185 ct |
| 15 lb | 34019.42775 ct |
| 20 lb | 45359.237 ct |
| 25 lb | 56699.04625 ct |
| 30 lb | 68038.8555 ct |
| 40 lb | 90718.474 ct |
| 50 lb | 113398.0925 ct |
| 100 lb | 226796.185 ct |
| 120 lb | 272155.422 ct |
| 130 lb | 294835.0405 ct |
| 140 lb | 317514.659 ct |
| 150 lb | 340194.2775 ct |
| 160 lb | 362873.896 ct |
| 170 lb | 385553.5145 ct |
| 180 lb | 408233.133 ct |
| 200 lb | 453592.37 ct |
| 220 lb | 498951.607 ct |
| 250 lb | 566990.4625 ct |
| 300 lb | 680388.555 ct |
Where it's used
Pounds are used for body weight and food in the US, while carats appear in diamonds and gemstones. Both measure mass (commonly called weight), so the conversion is a fixed factor.
Pound to other weight and mass units
| Conversion | 1 lb equals |
|---|---|
| pound to kilogram | 0.45359237 kg |
| pound to gram | 453.59237 g |
| pound to milligram | 453592.37 mg |
| pound to microgram | 453592370 µg |
| pound to metric ton | 0.00045359237 t |
| pound to ounce | 16 oz |
| pound to stone | 0.07142857143 st |
| pound to short ton | 0.0005 ton (US) |
| pound to long ton | 0.0004464285714 ton (UK) |
| pound to grain | 7000 gr |
| pound to troy ounce | 14.58333333 oz t |
| pound to carat | 2267.96185 ct |
Frequently asked questions
How many carats are in 1 pound?
1 lb = 2267.96185 ct.
How do I convert pounds to carats?
Multiply the value in lb by 2267.96185. For example, 15 lb × 2267.96185 = 34019.42775 ct.
Is the lb to ct conversion exact?
Yes. Both units are defined exactly, and 1 lb is exactly 2267.96185 ct.
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, "pound (avoirdupois) (lb)".
- 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".
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 Pounds to Carats. Retrieved October 17, 2026, from https://scientificconverters.com/mass/pounds-to-carats/
IEEE
Scientific Converters, "Convert Pounds to Carats," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/mass/pounds-to-carats/