Mass per volume density.
Grams per Cubic Millimeter to Pounds per Cup Converter — g/mm3 to lb/cup
Convert Gram per Cubic Millimeter (g/mm3) to Pound per Cup (lb/cup) using the exact conversion factor (1 gram per cubic millimeter = 521.5877783 pound per cup). See the formula, worked examples, and conversion table.
Grams per Cubic Millimeter to Pounds per Cup 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 1e+6 / 1917.222837.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams per Cubic Millimeter to Pounds per Cup
Gram per Cubic Millimeter and Pound per Cup 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 cup = grams per cubic millimeter × 521.587778251
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per cubic millimeter equals 1000000 base units, and 1 pound per cup equals 1917.22283707 base units, so dividing one by the other gives the direct gram per cubic millimeter-to-pound per cup factor of 521.587778251.
Simple example
1 g/mm3 × 521.5877783 = 521.5877783 lb/cup
1 gram per cubic millimeter = 521.5877783 pounds per cup.
Real-world example
1,000 g/mm3 × 521.5877783 = 521,587.7783 lb/cup
1,000 grams per cubic millimeter = 521,587.7783 pounds per cup.
Conversion table
| Gram per Cubic Millimeter (g/mm3) | Pound per Cup (lb/cup) |
|---|---|
| 0.1 g/mm3 | 52.15877783 lb/cup |
| 1 g/mm3 | 521.5877783 lb/cup |
| 10 g/mm3 | 5,215.877783 lb/cup |
| 100 g/mm3 | 52,158.77783 lb/cup |
| 1,000 g/mm3 | 521,587.7783 lb/cup |
| 10,000 g/mm3 | 5,215,877.783 lb/cup |
Reverse conversion: Pound per Cup to Gram per Cubic Millimeter
521.5877783 lb/cup × 0.001917222837 = 1 g/mm3
521.5877783 pounds per cup = 1 grams per cubic millimeter.
grams per cubic millimeter = pounds per cup × 0.00191722283707
For a page dedicated to this direction, see Pound per Cup to Gram per Cubic Millimeter.
Understanding the Gram per Cubic Millimeter (g/mm3)
Mass per volume density.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per cup are in 1 gram per cubic millimeter?
1 gram per cubic millimeter equals 521.5877783 pounds per cup, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cubic millimeter to pound per cup?
Multiply the gram per cubic millimeter value by 521.5877783. The converter above does this instantly to whatever precision you set.
How do I convert pound per cup back to gram per cubic millimeter?
Use the reverse factor: 1 pound per cup equals 0.0019172228 grams per cubic millimeter. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per cubic millimeter?
Gram per Cubic Millimeter (g/mm3) is a unit of density.
What is a pound per cup?
Pound per Cup (lb/cup) is a unit of density.
Is the gram per cubic millimeter to pound per cup conversion exact?
Yes. Both gram per cubic millimeter and pound per cup are defined by fixed standards rather than physical artifacts, so the factor of 521.5877783 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.