Gram per Cubic inch (g/in3) expresses mass in gram per unit volume in cubic inch, found by dividing a mass value by a volume value.
Gram per Cubic inch to Pound per Cubic Millimeter
Convert gram per cubic inch (g/in3) to pound per cubic millimeter (lb/mm3) instantly with formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Density calculator
Density Converter
Convert gram per cubic inch (g/in3) to pound per cubic millimeter (lb/mm3) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
Pound per Cubic Millimeter (lb/mm3) expresses mass in pound per unit volume in cubic millimeter, found by dividing a mass value by a volume value.
lb/mm3 = g/in3 × 1.345343e-7
Results update instantly for Gram per Cubic inch to Pound per Cubic Millimeter conversions.
Reserved above the conversion cards and below the converter.
Formula
lb/mm3 = g/in3 × 1.345343e-7
g/in3 = lb/mm3 × 7.433047e6
Conversion table
| 1 g/in3 | 1.345343e-7 lb/mm3 |
| 5 g/in3 | 6.726716e-7 lb/mm3 |
| 10 g/in3 | 1.345343e-6 lb/mm3 |
| 20 g/in3 | 2.690687e-6 lb/mm3 |
| 50 g/in3 | 6.726716e-6 lb/mm3 |
| 100 g/in3 | 1.345343e-5 lb/mm3 |
| 500 g/in3 | 6.726716e-5 lb/mm3 |
| 1000 g/in3 | 0.000135 lb/mm3 |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both gram per cubic inch and pound per cubic millimeter measure the same physical quantity (mass per unit volume), so converting between them is a single multiplication. Multiply a value in gram per cubic inch by 1.345343e-7 to get pound per cubic millimeter. To reverse the conversion, multiply a pound per cubic millimeter value by 7.433047e6 to get back to gram per cubic inch.
Frequently asked questions
What is Gram per Cubic inch (g/in3)?
Gram per Cubic inch (g/in3) expresses mass in gram per unit volume in cubic inch, found by dividing a mass value by a volume value.
What is Pound per Cubic Millimeter (lb/mm3)?
Pound per Cubic Millimeter (lb/mm3) expresses mass in pound per unit volume in cubic millimeter, found by dividing a mass value by a volume value.
How do I convert gram per cubic inch to pound per cubic millimeter?
Multiply the gram per cubic inch value by 1.345343e-7 to get the equivalent in pound per cubic millimeter. For example, 5 g/in3 × 1.345343e-7 = 6.726716e-7 lb/mm3.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 1.345343e-7 is an exact, non-rounded value.
Can I convert pound per cubic millimeter back to gram per cubic inch?
Yes. Divide the pound per cubic millimeter value by 1.345343e-7, or multiply it by 7.433047e6, to get gram per cubic inch.
Reserved between the FAQ and the article so the page stays balanced.
About converting gram per cubic inch to pound per cubic millimeter
Gram per Cubic inch (g/in3) expresses mass in gram per unit volume in cubic inch, found by dividing a mass value by a volume value. Pound per Cubic Millimeter (lb/mm3) expresses mass in pound per unit volume in cubic millimeter, found by dividing a mass value by a volume value.
Use this calculator to move between gram per cubic inch and pound per cubic millimeter accurately for science, engineering, manufacturing, or everyday density calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.