Mass per volume density.
Carats per Teaspoon to Kilograms per Cubic Millimeter Converter — ct/tsp to kg/mm3
Convert Carat per Teaspoon (ct/tsp) to Kilogram per Cubic Millimeter (kg/mm3) using the exact conversion factor (1 carat per teaspoon = 4.057683e-8 kilogram per cubic millimeter). See the formula, worked examples, and conversion table.
Carats per Teaspoon to Kilograms per Cubic Millimeter 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 / 1e+9.
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 Kilograms per Cubic Millimeter
Carat per Teaspoon and Kilogram per Cubic Millimeter 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
kilograms per cubic millimeter = carats per teaspoon × 4.057683e-8
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 kilogram per cubic millimeter equals 1000000000 base units, so dividing one by the other gives the direct carat per teaspoon-to-kilogram per cubic millimeter factor of 4.057683e-8.
Simple example
1 ct/tsp × 4.057683e-8 = 4.057683e-8 kg/mm3
1 carat per teaspoon = 4.057683e-8 kilograms per cubic millimeter.
Real-world example
1,000 ct/tsp × 4.057683e-8 = 0.0000405768 kg/mm3
1,000 carats per teaspoon = 0.0000405768 kilograms per cubic millimeter.
Conversion table
| Carat per Teaspoon (ct/tsp) | Kilogram per Cubic Millimeter (kg/mm3) |
|---|---|
| 0.1 ct/tsp | 4.057683e-9 kg/mm3 |
| 1 ct/tsp | 4.057683e-8 kg/mm3 |
| 10 ct/tsp | 4.057683e-7 kg/mm3 |
| 100 ct/tsp | 0.0000040577 kg/mm3 |
| 1,000 ct/tsp | 0.0000405768 kg/mm3 |
| 10,000 ct/tsp | 0.0004057683 kg/mm3 |
Reverse conversion: Kilogram per Cubic Millimeter to Carat per Teaspoon
4.057683e-8 kg/mm3 × 24644607.97 = 1.000000068 ct/tsp
4.057683e-8 kilograms per cubic millimeter = 1.000000068 carats per teaspoon.
carats per teaspoon = kilograms per cubic millimeter × 24644607.9687
For a page dedicated to this direction, see Kilogram per Cubic Millimeter to Carat per Teaspoon.
Understanding the Carat per Teaspoon (ct/tsp)
Mass per volume density.
Understanding the Kilogram per Cubic Millimeter (kg/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per cubic millimeter are in 1 carat per teaspoon?
1 carat per teaspoon equals 4.057683e-8 kilograms per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert carat per teaspoon to kilogram per cubic millimeter?
Multiply the carat per teaspoon value by 4.057683e-8. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cubic millimeter back to carat per teaspoon?
Use the reverse factor: 1 kilogram per cubic millimeter equals 24,644,607.97 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 kilogram per cubic millimeter?
Kilogram per Cubic Millimeter (kg/mm3) is a unit of density.
Is the carat per teaspoon to kilogram per cubic millimeter conversion exact?
Yes. Both carat per teaspoon and kilogram per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 4.057683e-8 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.