Carat per Teaspoon (ct/tsp) expresses mass in carat per unit volume in teaspoon, found by dividing a mass value by a volume value.
Carat per Teaspoon to Stone per Cubic Millimeter
Convert carat per teaspoon (ct/tsp) to stone per cubic millimeter (st/mm3) instantly with formula, conversion table, and FAQ.
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Convert carat per teaspoon (ct/tsp) to stone per cubic millimeter (st/mm3) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
Stone per Cubic Millimeter (st/mm3) expresses mass in stone per unit volume in cubic millimeter, found by dividing a mass value by a volume value.
st/mm3 = ct/tsp × 6.389757e-9
Results update instantly for Carat per Teaspoon to Stone per Cubic Millimeter conversions.
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Formula
st/mm3 = ct/tsp × 6.389757e-9
ct/tsp = st/mm3 × 1.565005e8
Conversion table
| 1 ct/tsp | 6.389757e-9 st/mm3 |
| 5 ct/tsp | 3.194878e-8 st/mm3 |
| 10 ct/tsp | 6.389757e-8 st/mm3 |
| 20 ct/tsp | 1.277951e-7 st/mm3 |
| 50 ct/tsp | 3.194878e-7 st/mm3 |
| 100 ct/tsp | 6.389757e-7 st/mm3 |
| 500 ct/tsp | 3.194878e-6 st/mm3 |
| 1000 ct/tsp | 6.389757e-6 st/mm3 |
Related conversions
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How the formula works
Both carat per teaspoon and stone per cubic millimeter measure the same physical quantity (mass per unit volume), so converting between them is a single multiplication. Multiply a value in carat per teaspoon by 6.389757e-9 to get stone per cubic millimeter. To reverse the conversion, multiply a stone per cubic millimeter value by 1.565005e8 to get back to carat per teaspoon.
Frequently asked questions
What is Carat per Teaspoon (ct/tsp)?
Carat per Teaspoon (ct/tsp) expresses mass in carat per unit volume in teaspoon, found by dividing a mass value by a volume value.
What is Stone per Cubic Millimeter (st/mm3)?
Stone per Cubic Millimeter (st/mm3) expresses mass in stone per unit volume in cubic millimeter, found by dividing a mass value by a volume value.
How do I convert carat per teaspoon to stone per cubic millimeter?
Multiply the carat per teaspoon value by 6.389757e-9 to get the equivalent in stone per cubic millimeter. For example, 5 ct/tsp × 6.389757e-9 = 3.194878e-8 st/mm3.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 6.389757e-9 is an exact, non-rounded value.
Can I convert stone per cubic millimeter back to carat per teaspoon?
Yes. Divide the stone per cubic millimeter value by 6.389757e-9, or multiply it by 1.565005e8, to get carat per teaspoon.
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About converting carat per teaspoon to stone per cubic millimeter
Carat per Teaspoon (ct/tsp) expresses mass in carat per unit volume in teaspoon, found by dividing a mass value by a volume value. Stone per Cubic Millimeter (st/mm3) expresses mass in stone per unit volume in cubic millimeter, found by dividing a mass value by a volume value.
Use this calculator to move between carat per teaspoon and stone per cubic millimeter accurately for science, engineering, manufacturing, or everyday density calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.