Mass per volume density.
Ounce per Cubic inches to Kilograms per Cup Converter — oz/in3 to kg/cup
Convert Ounce per Cubic inch (oz/in3) to Kilogram per Cup (kg/cup) using the exact conversion factor (1 ounce per cubic inch = 0.4092962401 kilogram per cup). See the formula, worked examples, and conversion table.
Ounce 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 1729.994044 / 4226.752838.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounce per Cubic inches to Kilograms per Cup
Ounce 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 = ounce per cubic inches × 0.409296240117
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per cubic inch equals 1729.99404439 base units, and 1 kilogram per cup equals 4226.75283773 base units, so dividing one by the other gives the direct ounce per cubic inch-to-kilogram per cup factor of 0.409296240117.
Simple example
1 oz/in3 × 0.4092962401 = 0.4092962401 kg/cup
1 ounce per cubic inch = 0.4092962401 kilograms per cup.
Real-world example
1,000 oz/in3 × 0.4092962401 = 409.2962401 kg/cup
1,000 ounce per cubic inches = 409.2962401 kilograms per cup.
Conversion table
| Ounce per Cubic inch (oz/in3) | Kilogram per Cup (kg/cup) |
|---|---|
| 0.1 oz/in3 | 0.040929624 kg/cup |
| 1 oz/in3 | 0.4092962401 kg/cup |
| 10 oz/in3 | 4.092962401 kg/cup |
| 100 oz/in3 | 40.92962401 kg/cup |
| 1,000 oz/in3 | 409.2962401 kg/cup |
| 10,000 oz/in3 | 4,092.962401 kg/cup |
Reverse conversion: Kilogram per Cup to Ounce per Cubic inch
0.4092962401 kg/cup × 2.443218144 = 1 oz/in3
0.4092962401 kilograms per cup = 1 ounce per cubic inches.
ounce per cubic inches = kilograms per cup × 2.44321814369
For a page dedicated to this direction, see Kilogram per Cup to Ounce per Cubic inch.
Understanding the Ounce per Cubic inch (oz/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 ounce per cubic inch?
1 ounce per cubic inch equals 0.4092962401 kilograms per cup, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per cubic inch to kilogram per cup?
Multiply the ounce per cubic inch value by 0.4092962401. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cup back to ounce per cubic inch?
Use the reverse factor: 1 kilogram per cup equals 2.443218144 ounce per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per cubic inch?
Ounce per Cubic inch (oz/in3) is a unit of density.
What is a kilogram per cup?
Kilogram per Cup (kg/cup) is a unit of density.
Is the ounce per cubic inch to kilogram per cup conversion exact?
Yes. Both ounce per cubic inch and kilogram per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.4092962401 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.