Mass per volume density.
Grains per Cubic Millimeter to Pounds per Cubic Centimeter Converter — gr/mm3 to lb/cm3
Convert Grain per Cubic Millimeter (gr/mm3) to Pound per Cubic Centimeter (lb/cm3) using the exact conversion factor (1 grain per cubic millimeter = 0.1428571429 pound per cubic centimeter). See the formula, worked examples, and conversion table.
Grains per Cubic Millimeter to Pounds per Cubic Centimeter 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 64798.91 / 453592.37.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Cubic Millimeter to Pounds per Cubic Centimeter
Grain per Cubic Millimeter and Pound per Cubic Centimeter 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 centimeter = grains per cubic millimeter × 0.142857142857
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per cubic millimeter equals 64798.91 base units, and 1 pound per cubic centimeter equals 453592.37 base units, so dividing one by the other gives the direct grain per cubic millimeter-to-pound per cubic centimeter factor of 0.142857142857.
Simple example
1 gr/mm3 × 0.1428571429 = 0.1428571429 lb/cm3
1 grain per cubic millimeter = 0.1428571429 pounds per cubic centimeter.
Real-world example
1,000 gr/mm3 × 0.1428571429 = 142.8571429 lb/cm3
1,000 grains per cubic millimeter = 142.8571429 pounds per cubic centimeter.
Conversion table
| Grain per Cubic Millimeter (gr/mm3) | Pound per Cubic Centimeter (lb/cm3) |
|---|---|
| 0.1 gr/mm3 | 0.0142857143 lb/cm3 |
| 1 gr/mm3 | 0.1428571429 lb/cm3 |
| 10 gr/mm3 | 1.428571429 lb/cm3 |
| 100 gr/mm3 | 14.28571429 lb/cm3 |
| 1,000 gr/mm3 | 142.8571429 lb/cm3 |
| 10,000 gr/mm3 | 1,428.571429 lb/cm3 |
Reverse conversion: Pound per Cubic Centimeter to Grain per Cubic Millimeter
0.1428571429 lb/cm3 × 7 = 1 gr/mm3
0.1428571429 pounds per cubic centimeter = 1 grains per cubic millimeter.
grains per cubic millimeter = pounds per cubic centimeter × 7
For a page dedicated to this direction, see Pound per Cubic Centimeter to Grain per Cubic Millimeter.
Understanding the Grain per Cubic Millimeter (gr/mm3)
Mass per volume density.
Understanding the Pound per Cubic Centimeter (lb/cm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per cubic centimeter are in 1 grain per cubic millimeter?
1 grain per cubic millimeter equals 0.1428571429 pounds per cubic centimeter, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cubic millimeter to pound per cubic centimeter?
Multiply the grain per cubic millimeter value by 0.1428571429. The converter above does this instantly to whatever precision you set.
How do I convert pound per cubic centimeter back to grain per cubic millimeter?
Use the reverse factor: 1 pound per cubic centimeter equals 7 grains per cubic millimeter. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per cubic millimeter?
Grain per Cubic Millimeter (gr/mm3) is a unit of density.
What is a pound per cubic centimeter?
Pound per Cubic Centimeter (lb/cm3) is a unit of density.
Is the grain per cubic millimeter to pound per cubic centimeter conversion exact?
Yes. Both grain per cubic millimeter and pound per cubic centimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.1428571429 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.