Mass per volume density.
Pound per Cubic inches to Hectograms per Cup Converter — lb/in3 to hg/cup
Convert Pound per Cubic inch (lb/in3) to Hectogram per Cup (hg/cup) using the exact conversion factor (1 pound per cubic inch = 65.48739842 hectogram per cup). See the formula, worked examples, conversion table, and common uses.
Pound per Cubic inches to Hectograms 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 27679.90471 / 422.6752838.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pound per Cubic inches to Hectograms per Cup
Pound per Cubic inch and Hectogram 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. Pound per Cubic inch is most often used for used in machining and materials engineering, particularly for describing the density of metals, where a smaller volume unit than the cubic foot gives a more convenient figure.
Formula
hectograms per cup = pound per cubic inches × 65.4873984188
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cubic inch equals 27679.9047102 base units, and 1 hectogram per cup equals 422.675283773 base units, so dividing one by the other gives the direct pound per cubic inch-to-hectogram per cup factor of 65.4873984188.
Simple example
1 lb/in3 × 65.48739842 = 65.48739842 hg/cup
1 pound per cubic inch = 65.48739842 hectograms per cup.
Real-world example
1,000 lb/in3 × 65.48739842 = 65,487.39842 hg/cup
1,000 pound per cubic inches = 65,487.39842 hectograms per cup.
Conversion table
| Pound per Cubic inch (lb/in3) | Hectogram per Cup (hg/cup) |
|---|---|
| 0.1 lb/in3 | 6.548739842 hg/cup |
| 1 lb/in3 | 65.48739842 hg/cup |
| 10 lb/in3 | 654.8739842 hg/cup |
| 100 lb/in3 | 6,548.739842 hg/cup |
| 1,000 lb/in3 | 65,487.39842 hg/cup |
| 10,000 lb/in3 | 654,873.9842 hg/cup |
Reverse conversion: Hectogram per Cup to Pound per Cubic inch
65.48739842 hg/cup × 0.0152701134 = 1 lb/in3
65.48739842 hectograms per cup = 1 pound per cubic inches.
pound per cubic inches = hectograms per cup × 0.0152701133981
For a page dedicated to this direction, see Hectogram per Cup to Pound per Cubic inch.
Understanding the Pound per Cubic inch
Pound per Cubic inch (lb/in3) measures density. A US customary density unit suited to describing dense materials in a small volume. It is classified as a US customary density unit.
Where it's used: United States
Uses of the Pound per Cubic inch today
- Used in machining and materials engineering, particularly for describing the density of metals, where a smaller volume unit than the cubic foot gives a more convenient figure
Understanding the Hectogram per Cup (hg/cup)
Mass per volume density.
Pound per Cubic inch — sources
- US materials-engineering reference tables — Pounds per cubic inch is a commonly tabulated density unit for metals in US machining and materials references.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectograms per cup are in 1 pound per cubic inch?
1 pound per cubic inch equals 65.48739842 hectograms per cup, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic inch to hectogram per cup?
Multiply the pound per cubic inch value by 65.48739842. The converter above does this instantly to whatever precision you set.
How do I convert hectogram per cup back to pound per cubic inch?
Use the reverse factor: 1 hectogram per cup equals 0.0152701134 pound per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cubic inch?
Pound per Cubic inch (lb/in3) measures density. A US customary density unit suited to describing dense materials in a small volume. It is classified as a US customary density unit.
What is a hectogram per cup?
Hectogram per Cup (hg/cup) is a unit of density.
Is the pound per cubic inch to hectogram per cup conversion exact?
Yes. Both pound per cubic inch and hectogram per cup are defined by fixed standards rather than physical artifacts, so the factor of 65.48739842 used above is exact to as many digits as you choose to display.
Where is the pound per cubic inch still used today?
United States
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.