Pound per US gallon to Gram per cubic centimeter Conversion Table
| Pound per US gallon (lb/gal) | Gram per cubic centimeter (g/cm3) | Reference Benchmark | Formula Step |
|---|---|---|---|
| 0.0102 lb/gal | 0.001225 g/cm³ | Dry atmospheric air at standard temperature and pressure | 0.0102 × 0.119826 = 0.001225 g/cm³ |
| 5.675 lb/gal | 0.68 g/cm³ | Automotive gasoline motor fuel blend | 5.675 × 0.119826 = 0.68 g/cm³ |
| 6.585 lb/gal | 0.789 g/cm³ | Pure ethyl alcohol chemical solvent | 6.585 × 0.119826 = 0.789 g/cm³ |
| 7.01 lb/gal | 0.84 g/cm³ | Standard diesel fuel #2 commercial grade | 7.01 × 0.119826 = 0.84 g/cm³ |
| 7.344 lb/gal | 0.88 g/cm³ | Industrial hydraulic lubricant oil | 7.344 × 0.119826 = 0.88 g/cm³ |
| 7.653 lb/gal | 0.917 g/cm³ | Solid pure water ice crystal structure | 7.653 × 0.119826 = 0.917 g/cm³ |
| 7.678 lb/gal | 0.92 g/cm³ | Refined edible vegetable cooking oil | 7.678 × 0.119826 = 0.92 g/cm³ |
| 8.329 lb/gal | 0.998 g/cm³ | Liquid water density at ambient 20°C | 8.329 × 0.119826 = 0.998 g/cm³ |
| 8.345 lb/gal | 1 g/cm³ | Pure liquid water density baseline at 4°C | 8.345 × 0.119826 = 1 g/cm³ |
| 8.596 lb/gal | 1.03 g/cm³ | Average ocean seawater salinity benchmark | 8.596 × 0.119826 = 1.03 g/cm³ |
| 9.263 lb/gal | 1.11 g/cm³ | Pure ethylene glycol automotive coolant | 9.263 × 0.119826 = 1.11 g/cm³ |
| 10.515 lb/gal | 1.26 g/cm³ | Pharmaceutical grade vegetable glycerin | 10.515 × 0.119826 = 1.26 g/cm³ |
| 11.266 lb/gal | 1.35 g/cm³ | Commercial architectural latex wall paint | 11.266 × 0.119826 = 1.35 g/cm³ |
| 11.851 lb/gal | 1.42 g/cm³ | Concentrated nitric acid industrial solution | 11.851 × 0.119826 = 1.42 g/cm³ |
| 15.356 lb/gal | 1.84 g/cm³ | Concentrated sulfuric acid electrolyte grade | 15.356 × 0.119826 = 1.84 g/cm³ |
| 113.08 lb/gal | 13.55 g/cm³ | Elemental liquid mercury metal at room temperature | 113.08 × 0.119826 = 13.55 g/cm³ |
Pound per US gallon to Gram per cubic centimeter Formula & Unit Definitions
The exact conversion factor is calculated from official unit definitions: 1 pound equals 453.59237 grams, and 1 US gallon contains exactly 231 cubic inches, equivalent to approximately 3,785.411784 cubic centimeters. Dividing mass by volume yields 453.59237 / 3,785.411784 ≈ 0.119826427 g/cm³ per 1 lb/gal. Consequently, multiplying any liquid density in lb/gal by 0.119826427 gives its exact metric density in g/cm³.
Quick Estimation: To estimate lb/gal to g/cm³ in your head, divide the lb/gal value by 8.35 (or multiply by 12 and divide by 100). For example, a heavy resin weighing 10.5 lb/gal divided by 8.35 gives approximately 1.26 g/cm³.
Pound per US gallon (lb/gal)
Source Unit- Standard American manufacturing unit for paints, varnishes, lubricants, and bulk liquid shipping.
- Directly measured in industrial plants using calibrated tare-weight Gardner weight-per-gallon cups.
- Intuitive operational baseline where pure water weighs 8.34 lb/gal and lightweight fuels weigh ~5.5-7.0 lb/gal.
Grams per Cubic Centimeter (g/cm³)
Target Unit- Universal scientific metric CGS unit used across worldwide chemical literature and laboratory assays.
- Identical numerically to grams per milliliter (g/mL) and relative specific gravity at 4°C.
- Normalizes liquid densities into a concise range where pure water equals 1.000 g/cm³.
Frequently Asked Questions
Q.What is the exact formula for lb/gal to g/cm³?
Density (g/cm³) = Density (lb/gal) × 0.119826427. For the reverse conversion from g/cm³ to lb/gal, multiply by 8.34540447.
Q.What is the physical difference between Pound per US gallon and Gram per cubic centimeter?
Pound per US gallon is an American fluid process engineering unit commonly used for paints, fuels, and bulk liquids, while Gram per cubic centimeter is a metric CGS laboratory standard.
Q.How does lb/gal relate to specific gravity?
Because pure water has a density of 1.0 g/cm³ and weighs 8.3454 lb/gal, dividing any substance's density in lb/gal by 8.3454 yields its dimensionless specific gravity.