Mass per volume density.
Pound per Cubic inches to Grams per Cubic Centimeter Converter — lb/in3 to g/cm3
Convert Pound per Cubic inch (lb/in3) to Gram per Cubic Centimeter (g/cm3) using the exact conversion factor (1 pound per cubic inch = 27.67990471 gram per cubic centimeter). See the formula, worked examples, conversion table, unit comparison, and common uses.
Pound per Cubic inches to Grams per Cubic Centimeter 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 / 1000.
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 Grams per Cubic Centimeter
Pound per Cubic inch and Gram per Cubic Centimeter 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 typically associated with united States, while Gram per Cubic Centimeter is typically associated with standard density unit in chemistry and materials science worldwide.
Formula
grams per cubic centimeter = pound per cubic inches × 27.6799047102
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 gram per cubic centimeter equals 1000 base units, so dividing one by the other gives the direct pound per cubic inch-to-gram per cubic centimeter factor of 27.6799047102.
Simple example
1 lb/in3 × 27.67990471 = 27.67990471 g/cm3
1 pound per cubic inch = 27.67990471 grams per cubic centimeter.
Real-world example
1,000 lb/in3 × 27.67990471 = 27,679.90471 g/cm3
1,000 pound per cubic inches = 27,679.90471 grams per cubic centimeter.
Conversion table
| Pound per Cubic inch (lb/in3) | Gram per Cubic Centimeter (g/cm3) |
|---|---|
| 0.1 lb/in3 | 2.767990471 g/cm3 |
| 1 lb/in3 | 27.67990471 g/cm3 |
| 10 lb/in3 | 276.7990471 g/cm3 |
| 100 lb/in3 | 2,767.990471 g/cm3 |
| 1,000 lb/in3 | 27,679.90471 g/cm3 |
| 10,000 lb/in3 | 276,799.0471 g/cm3 |
Reverse conversion: Gram per Cubic Centimeter to Pound per Cubic inch
27.67990471 g/cm3 × 0.036127292 = 1 lb/in3
27.67990471 grams per cubic centimeter = 1 pound per cubic inches.
pound per cubic inches = grams per cubic centimeter × 0.0361272920001
For a page dedicated to this direction, see Gram per Cubic Centimeter to Pound per Cubic inch.
Pound per Cubic inch vs. Gram per Cubic Centimeter
| Aspect | Pound per Cubic inch | Gram per Cubic Centimeter |
|---|---|---|
| Family | US customary density unit | metric derived density unit |
| Typical use | 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 | Material identification in chemistry and geology (mineral density tables) |
| Where it's used | United States | Standard density unit in chemistry and materials science worldwide |
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 Gram per Cubic Centimeter
Gram per Cubic Centimeter (g/cm3) measures density. Numerically identical to kilograms per liter, since one cubic centimeter equals one milliliter — this is the form most commonly used in chemistry and materials-science textbooks. It is classified as a metric derived density unit.
Where it's used: Standard density unit in chemistry and materials science worldwide
Uses of the Gram per Cubic Centimeter today
- Material identification in chemistry and geology (mineral density tables)
- Materials science and engineering specifications
- Laboratory density measurements
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.
Gram per Cubic Centimeter — sources
- BIPM SI Brochure — Gram and cubic centimeter as accepted units for expressing density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per cubic centimeter are in 1 pound per cubic inch?
1 pound per cubic inch equals 27.67990471 grams per cubic centimeter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic inch to gram per cubic centimeter?
Multiply the pound per cubic inch value by 27.67990471. The converter above does this instantly to whatever precision you set.
How do I convert gram per cubic centimeter back to pound per cubic inch?
Use the reverse factor: 1 gram per cubic centimeter equals 0.036127292 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 gram per cubic centimeter?
Gram per Cubic Centimeter (g/cm3) measures density. Numerically identical to kilograms per liter, since one cubic centimeter equals one milliliter — this is the form most commonly used in chemistry and materials-science textbooks. It is classified as a metric derived density unit.
Is the pound per cubic inch to gram per cubic centimeter conversion exact?
Yes. Both pound per cubic inch and gram per cubic centimeter are defined by fixed standards rather than physical artifacts, so the factor of 27.67990471 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.