g/cm³ to lb/in³ Converter
Convert grams per cubic centimeter to pounds per cubic inch — divide by 27.68. Results update as you type; exact factors shown.
One gram per cubic centimeter is 0.0361 pound per cubic inch — see the exact factor, not a rounded rule of thumb.
How the g/cm³ to lb/in³ converter works
Density converts through kg/m³. 1 g/cm³ = 1 kg/L = 1,000 kg/m³ (water at 4 °C). 1 lb/ft³ = 16.0185 kg/m³ and 1 lb/US gal = 119.83 kg/m³. Concrete is about 2,400 kg/m³, steel 7,850 kg/m³, petrol about 740 kg/m³.
The US uses customary units (US gallon, short ton, °F) in daily life; NIST SP 811 gives the exact SI factors.
Common density conversions
| From | To | Units |
|---|---|---|
| 1 g/cm³ | 0.0361 lb/in³ | gram per cubic centimeter to pound per cubic inch |
| 2.7 g/cm³ | 0.0975 lb/in³ | gram per cubic centimeter to pound per cubic inch |
| 4.5 g/cm³ | 0.1626 lb/in³ | gram per cubic centimeter to pound per cubic inch |
| 7.85 g/cm³ | 0.2836 lb/in³ | gram per cubic centimeter to pound per cubic inch |
| 8.96 g/cm³ | 0.3237 lb/in³ | gram per cubic centimeter to pound per cubic inch |
| 11.34 g/cm³ | 0.4097 lb/in³ | gram per cubic centimeter to pound per cubic inch |
| 13.534 g/cm³ | 0.4889 lb/in³ | gram per cubic centimeter to pound per cubic inch |
| 19.3 g/cm³ | 0.6973 lb/in³ | gram per cubic centimeter to pound per cubic inch |
| 21.45 g/cm³ | 0.7749 lb/in³ | gram per cubic centimeter to pound per cubic inch |
| 22.59 g/cm³ | 0.8161 lb/in³ | gram per cubic centimeter to pound per cubic inch |
| 0.5 g/cm³ | 0.0181 lb/in³ | gram per cubic centimeter to pound per cubic inch |
| 0.9 g/cm³ | 0.0325 lb/in³ | gram per cubic centimeter to pound per cubic inch |
Units in this converter and their exact factors
| Unit | Symbol | One unit in kilogram per cubic meters |
|---|---|---|
| kilogram per cubic meter | kg/m³ | 1 kilogram per cubic meter |
| gram per cubic centimeter | g/cm³ | 1,000 kilogram per cubic meter |
| gram per milliliter | g/mL | 1,000 kilogram per cubic meter |
| kilogram per liter | kg/L | 1,000 kilogram per cubic meter |
| pound per cubic foot | lb/ft³ | 16.018463374 kilogram per cubic meter |
| pound per cubic inch | lb/in³ | 27,679.9047102 kilogram per cubic meter |
| pound per US gallon | lb/US gal | 119.826427317 kilogram per cubic meter |
| ounce per cubic inch | oz/in³ | 1,729.99404 kilogram per cubic meter |
| tonne per cubic meter | t/m³ | 1,000 kilogram per cubic meter |
FAQFrequently asked questions about density conversion
What is 1 g/cm³ in lb/in³?
0.0361 lb/in³ — that is water.
What is aluminium?
2.70 g/cm³, or 0.0975 lb/in³.
What is gold?
19.3 g/cm³, which is 0.697 lb/in³.
Which unit do material data sheets use?
g/cm³ or kg/m³ outside the US; lb/in³ within it, particularly for metals.
What is titanium?
4.5 g/cm³ — 0.163 lb/in³, which is why it is used where strength-to-weight matters.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Institute of Standards and Technology (NIST) — United States's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.