Mass per volume density.
Gram per Cubic inches to Pounds per Cubic Meter Converter — g/in3 to lb/m3
Convert Gram per Cubic inch (g/in3) to Pound per Cubic Meter (lb/m3) using the exact conversion factor (1 gram per cubic inch = 134.5343267 pound per cubic meter). See the formula, worked examples, and conversion table.
Gram per Cubic inches to Pounds per Cubic Meter 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 61.02374409 / 0.45359237.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gram per Cubic inches to Pounds per Cubic Meter
Gram per Cubic inch and Pound per Cubic Meter 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. Both are mass per volume density units.
Formula
pounds per cubic meter = gram per cubic inches × 134.534326701
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per cubic inch equals 61.0237440947 base units, and 1 pound per cubic meter equals 0.45359237 base units, so dividing one by the other gives the direct gram per cubic inch-to-pound per cubic meter factor of 134.534326701.
Simple example
1 g/in3 × 134.5343267 = 134.5343267 lb/m3
1 gram per cubic inch = 134.5343267 pounds per cubic meter.
Real-world example
1,000 g/in3 × 134.5343267 = 134,534.3267 lb/m3
1,000 gram per cubic inches = 134,534.3267 pounds per cubic meter.
Conversion table
| Gram per Cubic inch (g/in3) | Pound per Cubic Meter (lb/m3) |
|---|---|
| 0.1 g/in3 | 13.45343267 lb/m3 |
| 1 g/in3 | 134.5343267 lb/m3 |
| 10 g/in3 | 1,345.343267 lb/m3 |
| 100 g/in3 | 13,453.43267 lb/m3 |
| 1,000 g/in3 | 134,534.3267 lb/m3 |
| 10,000 g/in3 | 1,345,343.267 lb/m3 |
Reverse conversion: Pound per Cubic Meter to Gram per Cubic inch
134.5343267 lb/m3 × 0.007433047197 = 1 g/in3
134.5343267 pounds per cubic meter = 1 gram per cubic inches.
gram per cubic inches = pounds per cubic meter × 0.0074330471971
For a page dedicated to this direction, see Pound per Cubic Meter to Gram per Cubic inch.
Understanding the Gram per Cubic inch (g/in3)
Mass per volume density.
Understanding the Pound per Cubic Meter (lb/m3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per cubic meter are in 1 gram per cubic inch?
1 gram per cubic inch equals 134.5343267 pounds per cubic meter, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cubic inch to pound per cubic meter?
Multiply the gram per cubic inch value by 134.5343267. The converter above does this instantly to whatever precision you set.
How do I convert pound per cubic meter back to gram per cubic inch?
Use the reverse factor: 1 pound per cubic meter equals 0.0074330472 gram per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per cubic inch?
Gram per Cubic inch (g/in3) is a unit of density.
What is a pound per cubic meter?
Pound per Cubic Meter (lb/m3) is a unit of density.
Is the gram per cubic inch to pound per cubic meter conversion exact?
Yes. Both gram per cubic inch and pound per cubic meter are defined by fixed standards rather than physical artifacts, so the factor of 134.5343267 used above is exact to as many digits as you choose to display.
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.