Mass per volume density.
Carats per Cup to Stones per Cubic Meter Converter — ct/cup to st/m3
Convert Carat per Cup (ct/cup) to Stone per Cubic Meter (st/m3) using the exact conversion factor (1 carat per cup = 0.1331199275 stone per cubic meter). See the formula, worked examples, and conversion table.
Carats per Cup to Stones per Cubic Meter 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 0.8453505675 / 6.35029318.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats per Cup to Stones per Cubic Meter
Carat per Cup and Stone per Cubic Meter 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
stones per cubic meter = carats per cup × 0.133119927472
This factor comes from each unit's defined relationship to the category's base unit: 1 carat per cup equals 0.845350567546 base units, and 1 stone per cubic meter equals 6.35029318 base units, so dividing one by the other gives the direct carat per cup-to-stone per cubic meter factor of 0.133119927472.
Simple example
1 ct/cup × 0.1331199275 = 0.1331199275 st/m3
1 carat per cup = 0.1331199275 stones per cubic meter.
Real-world example
1,000 ct/cup × 0.1331199275 = 133.1199275 st/m3
1,000 carats per cup = 133.1199275 stones per cubic meter.
Conversion table
| Carat per Cup (ct/cup) | Stone per Cubic Meter (st/m3) |
|---|---|
| 0.1 ct/cup | 0.0133119928 st/m3 |
| 1 ct/cup | 0.1331199275 st/m3 |
| 10 ct/cup | 1.331199275 st/m3 |
| 100 ct/cup | 13.31199275 st/m3 |
| 1,000 ct/cup | 133.1199275 st/m3 |
| 10,000 ct/cup | 1,331.199275 st/m3 |
Reverse conversion: Stone per Cubic Meter to Carat per Cup
0.1331199275 st/m3 × 7.512023324 = 1 ct/cup
0.1331199275 stones per cubic meter = 1 carats per cup.
carats per cup = stones per cubic meter × 7.51202332357
For a page dedicated to this direction, see Stone per Cubic Meter to Carat per Cup.
Understanding the Carat per Cup (ct/cup)
Mass per volume density.
Understanding the Stone per Cubic Meter (st/m3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per cubic meter are in 1 carat per cup?
1 carat per cup equals 0.1331199275 stones per cubic meter, using the exact defined conversion factor rather than an estimate.
How do I convert carat per cup to stone per cubic meter?
Multiply the carat per cup value by 0.1331199275. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic meter back to carat per cup?
Use the reverse factor: 1 stone per cubic meter equals 7.512023324 carats per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat per cup?
Carat per Cup (ct/cup) is a unit of density.
What is a stone per cubic meter?
Stone per Cubic Meter (st/m3) is a unit of density.
Is the carat per cup to stone per cubic meter conversion exact?
Yes. Both carat per cup and stone per cubic meter are defined by fixed standards rather than physical artifacts, so the factor of 0.1331199275 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.