Mass per volume density.
Dram per Cubic inches to Kilograms per Cup Converter — dr/in3 to kg/cup
Convert Dram per Cubic inch (dr/in3) to Kilogram per Cup (kg/cup) using the exact conversion factor (1 dram per cubic inch = 0.025581015 kilogram per cup). See the formula, worked examples, and conversion table.
Dram per Cubic inches to Kilograms per Cup 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 108.1246278 / 4226.752838.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Dram per Cubic inches to Kilograms per Cup
Dram per Cubic inch and Kilogram per Cup 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 cup = dram per cubic inches × 0.0255810150073
This factor comes from each unit's defined relationship to the category's base unit: 1 dram per cubic inch equals 108.124627774 base units, and 1 kilogram per cup equals 4226.75283773 base units, so dividing one by the other gives the direct dram per cubic inch-to-kilogram per cup factor of 0.0255810150073.
Simple example
1 dr/in3 × 0.02558101501 = 0.025581015 kg/cup
1 dram per cubic inch = 0.025581015 kilograms per cup.
Real-world example
1,000 dr/in3 × 0.02558101501 = 25.58101501 kg/cup
1,000 dram per cubic inches = 25.58101501 kilograms per cup.
Conversion table
| Dram per Cubic inch (dr/in3) | Kilogram per Cup (kg/cup) |
|---|---|
| 0.1 dr/in3 | 0.0025581015 kg/cup |
| 1 dr/in3 | 0.025581015 kg/cup |
| 10 dr/in3 | 0.2558101501 kg/cup |
| 100 dr/in3 | 2.558101501 kg/cup |
| 1,000 dr/in3 | 25.58101501 kg/cup |
| 10,000 dr/in3 | 255.8101501 kg/cup |
Reverse conversion: Kilogram per Cup to Dram per Cubic inch
0.025581015 kg/cup × 39.0914903 = 0.9999999997 dr/in3
0.025581015 kilograms per cup = 0.9999999997 dram per cubic inches.
dram per cubic inches = kilograms per cup × 39.0914902991
For a page dedicated to this direction, see Kilogram per Cup to Dram per Cubic inch.
Understanding the Dram per Cubic inch (dr/in3)
Mass per volume density.
Understanding the Kilogram per Cup (kg/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per cup are in 1 dram per cubic inch?
1 dram per cubic inch equals 0.025581015 kilograms per cup, using the exact defined conversion factor rather than an estimate.
How do I convert dram per cubic inch to kilogram per cup?
Multiply the dram per cubic inch value by 0.02558101501. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cup back to dram per cubic inch?
Use the reverse factor: 1 kilogram per cup equals 39.0914903 dram per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram per cubic inch?
Dram per Cubic inch (dr/in3) is a unit of density.
What is a kilogram per cup?
Kilogram per Cup (kg/cup) is a unit of density.
Is the dram per cubic inch to kilogram per cup conversion exact?
Yes. Both dram per cubic inch and kilogram per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.02558101501 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.