Mass per volume density.
Carats per Teaspoon to Carats per Milliliter Converter — ct/tsp to ct/mL
Convert Carat per Teaspoon (ct/tsp) to Carat per Milliliter (ct/mL) using the exact conversion factor (1 carat per teaspoon = 0.2028841362 carat per milliliter). See the formula, worked examples, and conversion table.
Carats per Teaspoon to Carats per Milliliter converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 40.57682724 / 200.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats per Teaspoon to Carats per Milliliter
Carat per Teaspoon and Carat per Milliliter both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.
Formula
carats per milliliter = carats per teaspoon × 0.202884136211
This factor comes from each unit's defined relationship to the category's base unit: 1 carat per teaspoon equals 40.5768272422 base units, and 1 carat per milliliter equals 200 base units, so dividing one by the other gives the direct carat per teaspoon-to-carat per milliliter factor of 0.202884136211.
Simple example
1 ct/tsp × 0.2028841362 = 0.2028841362 ct/mL
1 carat per teaspoon = 0.2028841362 carats per milliliter.
Real-world example
1,000 ct/tsp × 0.2028841362 = 202.8841362 ct/mL
1,000 carats per teaspoon = 202.8841362 carats per milliliter.
Conversion table
| Carat per Teaspoon (ct/tsp) | Carat per Milliliter (ct/mL) |
|---|---|
| 0.1 ct/tsp | 0.0202884136 ct/mL |
| 1 ct/tsp | 0.2028841362 ct/mL |
| 10 ct/tsp | 2.028841362 ct/mL |
| 100 ct/tsp | 20.28841362 ct/mL |
| 1,000 ct/tsp | 202.8841362 ct/mL |
| 10,000 ct/tsp | 2,028.841362 ct/mL |
Reverse conversion: Carat per Milliliter to Carat per Teaspoon
0.2028841362 ct/mL × 4.928921594 = 0.9999999999 ct/tsp
0.2028841362 carats per milliliter = 0.9999999999 carats per teaspoon.
carats per teaspoon = carats per milliliter × 4.92892159375
For a page dedicated to this direction, see Carat per Milliliter to Carat per Teaspoon.
Understanding the Carat per Teaspoon (ct/tsp)
Mass per volume density.
Understanding the Carat per Milliliter (ct/mL)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats per milliliter are in 1 carat per teaspoon?
1 carat per teaspoon equals 0.2028841362 carats per milliliter, using the exact defined conversion factor rather than an estimate.
How do I convert carat per teaspoon to carat per milliliter?
Multiply the carat per teaspoon value by 0.2028841362. The converter above does this instantly to whatever precision you set.
How do I convert carat per milliliter back to carat per teaspoon?
Use the reverse factor: 1 carat per milliliter equals 4.928921594 carats per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat per teaspoon?
Carat per Teaspoon (ct/tsp) is a unit of density.
What is a carat per milliliter?
Carat per Milliliter (ct/mL) is a unit of density.
Is the carat per teaspoon to carat per milliliter conversion exact?
Yes. Both carat per teaspoon and carat per milliliter are defined by fixed standards rather than physical artifacts, so the factor of 0.2028841362 used above is exact to as many digits as you choose to display.
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.