Convert carats to stones
1 ct = 0.0000314946088836 st — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
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Show this value in all 34 weight & mass units
- Megagrams Mg 0.000 000 2
- Kilograms kg 0.0002
- Hectograms hg 0.002
- Decagrams dag 0.02
- Grams g 0.2
- Decigrams dg 2
- Centigrams cg 20
- Milligrams mg 200
- Micrograms µg 200 000
- Nanograms ng 200 000 000
- Picograms pg 200 000 000 000
- Tonnes t 0.000 000 2
- Kilotonnes kt 2e-10
- Megatonnes Mt 2e-13
- Quintals q 0.000 002
- Carats ct 1
- Pounds lb 0.000 440 924 524 37
- Ounces oz 0.007 054 792 389 92
- Drams dr 0.112 876 678 239
- Grains gr 3.086 471 670 59
- Stones st 0.000 031 494 608 883 6
- Hundredweight (US)s cwt (US) 0.000 004 409 245 243 7
- Hundredweight (UK)s cwt (UK) 0.000 003 936 826 110 44
- Short ton (US)s tn 0.000 000 220 462 262 185
- Long ton (UK)s LT 0.000 000 196 841 305 522
- Troy ounces ozt 0.006 430 149 313 73
- Troy pounds lbt 0.000 535 845 776 144
- Pennyweights dwt 0.128 602 986 275
- Slugs slug 0.000 013 704 353 171 4
- Atomic mass units u 1.20442815073e+23
- Electron masss mₑ 2.19553820852e+26
- Planck masss mₚ 9189.343 669 51
- Earth masss M🜨 3.34884967014e-29
- Solar masss M☉ 1.00557086258e-34
Every row is Carat (ct) converted through the kilogram, in exact rational arithmetic.
How to convert carats to stones
Multiply the number of carats by 0.0000314946088836 to get stones.
Carat: The metric carat: exactly 200 mg.
Stone: Body weight in the UK and Ireland: 14 pounds.
Carat to Stone conversion table
| Carats (ct) | Stones (st) |
|---|---|
| 1 ct | 0.000 031 494 609 |
| 2 ct | 0.000 062 989 218 |
| 3 ct | 0.000 094 483 827 |
| 5 ct | 0.000 157 473 04 |
| 10 ct | 0.000 314 946 09 |
| 20 ct | 0.000 629 892 18 |
| 25 ct | 0.000 787 365 22 |
| 50 ct | 0.001 574 730 4 |
| 100 ct | 0.003 149 460 9 |
| 250 ct | 0.007 873 652 2 |
| 500 ct | 0.015 747 304 |
| 1000 ct | 0.031 494 609 |
Stone to Carat conversion table
| Stones (st) | Carats (ct) |
|---|---|
| 1 st | 31 751.466 |
| 2 st | 63 502.932 |
| 3 st | 95 254.398 |
| 5 st | 158 757.33 |
| 10 st | 317 514.66 |
| 20 st | 635 029.32 |
| 25 st | 793 786.65 |
| 50 st | 1 587 573.3 |
| 100 st | 3 175 146.6 |
| 250 st | 7 937 866.5 |
| 500 st | 15 875 733 |
| 1000 st | 31 751 466 |
Frequently asked
How many stones are in a carat?
One carat equals 0.00003149460888 stones (ct → st). That figure is exact, not rounded.
How do you convert carats to stones?
Multiply the number of carats by 0.0000314946088836 to get stones.
What is 1 st in carats?
One stone is 31751.4659 carats.
What is 10 ct in st?
10 ct = 0.000 314 946 09 st.
What exactly is a carat?
The metric carat: exactly 200 mg.
What exactly is a stone?
Body weight in the UK and Ireland: 14 pounds.