Pound per cubic foot to Gram per cubic centimeter Conversion Table
| Pound per cubic foot (lb/ft3) | Gram per cubic centimeter (g/cm3) | Reference Benchmark | Formula Step |
|---|---|---|---|
| 0.0765 lb/ft³ | 0.001225 g/cm³ | Dry atmospheric air at standard temperature and pressure | 0.0765 × 0.016018 = 0.001225 g/cm³ |
| 7.491 lb/ft³ | 0.12 g/cm³ | Aviation balsa wood lightweight core material | 7.491 × 0.016018 = 0.12 g/cm³ |
| 14.983 lb/ft³ | 0.24 g/cm³ | Natural cork stopper insulation material | 14.983 × 0.016018 = 0.24 g/cm³ |
| 33.337 lb/ft³ | 0.534 g/cm³ | Elemental metallic lithium solid | 33.337 × 0.016018 = 0.534 g/cm³ |
| 42.451 lb/ft³ | 0.68 g/cm³ | Automotive gasoline motor fuel blend | 42.451 × 0.016018 = 0.68 g/cm³ |
| 49.942 lb/ft³ | 0.8 g/cm³ | Industrial denatured ethyl alcohol | 49.942 × 0.016018 = 0.8 g/cm³ |
| 57.246 lb/ft³ | 0.917 g/cm³ | Freshwater ice crystal density at 0°C | 57.246 × 0.016018 = 0.917 g/cm³ |
| 62.303 lb/ft³ | 0.998 g/cm³ | Liquid water density at ambient 20°C | 62.303 × 0.016018 = 0.998 g/cm³ |
| 62.428 lb/ft³ | 1 g/cm³ | Pure liquid water density baseline at 4°C | 62.428 × 0.016018 = 1 g/cm³ |
| 78.659 lb/ft³ | 1.26 g/cm³ | Pharmaceutical grade vegetable glycerin | 78.659 × 0.016018 = 1.26 g/cm³ |
| 149.827 lb/ft³ | 2.4 g/cm³ | Standard reinforced structural building concrete | 149.827 × 0.016018 = 2.4 g/cm³ |
| 168.556 lb/ft³ | 2.7 g/cm³ | Commercial aerospace aluminum alloy 6061 | 168.556 × 0.016018 = 2.7 g/cm³ |
| 490.06 lb/ft³ | 7.85 g/cm³ | Structural carbon construction steel | 490.06 × 0.016018 = 7.85 g/cm³ |
| 559.355 lb/ft³ | 8.96 g/cm³ | Pure electrical grade copper cathode | 559.355 × 0.016018 = 8.96 g/cm³ |
| 707.933 lb/ft³ | 11.34 g/cm³ | Refined elemental lead radiation shield | 707.933 × 0.016018 = 11.34 g/cm³ |
| 1,206.108 lb/ft³ | 19.32 g/cm³ | Refined 24-karat monetary bullion gold | 1,206.108 × 0.016018 = 19.32 g/cm³ |
Pound per cubic foot to Gram per cubic centimeter Formula & Unit Definitions
The exact ratio is established by unit definitions: 1 pound is legally defined as 453.59237 grams, and 1 cubic foot equals exactly 28,316.846592 cubic centimeters. Dividing mass by volume yields 453.59237 / 28,316.846592 ≈ 0.0160184634 g/cm³ per 1 lb/ft³. Consequently, multiplying any density in lb/ft³ by 0.0160184634 converts it to g/cm³.
Quick Estimation: To estimate lb/ft³ to g/cm³ mentally, divide the lb/ft³ value by 62.4 (or multiply by 16 and divide by 1,000). For example, steel at 490 lb/ft³ divided by 62.4 gives approximately 7.85 g/cm³.
Pound per cubic foot (lb/ft3)
Source Unit- Standard imperial density unit in US building codes, civil earthwork, and HVAC airflow sizing.
- Measures the gravitational pound force or mass enclosed in a one-foot cube.
- Anchored around liquid water at ~62.4 lb/ft³ and normal Portland cement concrete at ~145-150 lb/ft³.
Grams per Cubic Centimeter (g/cm³)
Target Unit- Standard metric CGS laboratory unit widely used across chemistry, physics, and mineralogy.
- Directly identical to grams per milliliter (g/mL) and specific gravity relative to water at 4°C.
- Yields compact numbers where water equals 1.0 and solid structural metals range from 2.7 to 19.3.
Frequently Asked Questions
Q.What is the exact formula for lb/ft³ to g/cm³?
Density (g/cm³) = Density (lb/ft³) × 0.0160184634. For the reverse conversion from g/cm³ to lb/ft³, multiply by 62.4279605.
Q.What is the physical difference between Pound per cubic foot and Gram per cubic centimeter?
Pound per cubic foot is an imperial engineering unit commonly used in American building codes and civil earthwork, while Gram per cubic centimeter is a metric CGS laboratory standard.
Q.How do I convert soil unit weight in lb/ft³ to specific gravity in g/cm³?
Multiply the soil dry unit weight in lb/ft³ by 0.01601846 to obtain the dry density in g/cm³. Dividing this by water's density (1 g/cm³) gives the substance specific gravity.