metric carat to stone
Convert metric carat (ct) to stone (st). Use an editable mass converter, conversion formula, and reference table.
1 ct = 0.00003149460888 st
Conversion formula
One metric carat equals 0.00003149460888 stone. Multiply your value in metric carat by this factor to get stone. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 metric carat:5 × 0.00003149460888 = 0.0001574730444 st
Conversion table
| metric carat (ct) | stone (st) |
|---|---|
| 0.01 | 3.14946089e-7 |
| 0.1 | 0.000003149460888 |
| 1 | 0.00003149460888 |
| 2 | 0.00006298921777 |
| 5 | 0.0001574730444 |
| 10 | 0.0003149460888 |
| 25 | 0.0007873652221 |
| 50 | 0.001574730444 |
| 100 | 0.003149460888 |
| 1000 | 0.03149460888 |
About these measurements
Mass quantifies an amount of matter.
The base reference used here is the gram. One metric carat is 0.2 base units; one stone is 6,350.29318 base units.
Important distinctions
Mass is not force. Avoirdupois ounces and troy ounces have different masses.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert ct to st?
Multiply the quantity in ct by 0.00003149460888. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the stone to metric carat converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
