A metric carat is exactly 200 milligrams.
Carats to Stones
Convert carats (ct) to stones (st) instantly. Free online weight converter with formulas, tables and examples.
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A stone is 14 pounds.
st = ct × 3.14946088836e-05
Results update instantly for Carats to Stones conversions.
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Formula
st = ct × 3.14946088836e-05
ct = st ÷ 3.14946088836e-05
Conversion table
| 1 ct | 0.000031 st |
| 5 ct | 0.000157 st |
| 10 ct | 0.000315 st |
| 20 ct | 0.000630 st |
| 50 ct | 0.001575 st |
| 100 ct | 0.003149 st |
| 500 ct | 0.015747 st |
| 1000 ct | 0.031495 st |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the carat (ct). A metric carat is exactly 200 milligrams.
What is the destination unit in this conversion?
The destination unit is the stone (st). A stone is 14 pounds.
How do I convert carats to stones?
Multiply the number of carats by 3.14946088836e-05 to get the equivalent value in stones. For example, 5 ct × 3.14946088836e-05 = 0.000157 st.
Is the carat to stone conversion exact?
Yes. This converter uses a fixed factor of 3.14946088836e-05, so results are precise and consistent every time you use it.
Where is this conversion commonly used?
It's used in everyday measurement, shipping and logistics, scientific and industrial work, and any context where you need to switch between carat and stone values.
Can I convert stones back to carats?
Yes. Multiply the stones value by 31751.4659, or divide it by 3.14946088836e-05, to convert back to carats.
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About this conversion
This page converts carats (ct) into stones (st) using the Universal Converter's mass conversion engine.
Carat-to-Stone conversions are useful for everyday calculations, scientific work, shipping, and any task that mixes different weight or mass units.
The formula is st = ct × 3.14946088836e-05, based on the standard definitions of carat and stone.
Because the conversion factor is fixed, results stay consistent and repeatable no matter how many times you calculate them.
Carat: A metric carat is exactly 200 milligrams. Stone: A stone is 14 pounds.