Mass per volume density.
Pounds per Cubic foot to Drams per Cubic Millimeter Converter — lb/ft3 to dr/mm3
Convert Pound per Cubic foot (lb/ft3) to Dram per Cubic Millimeter (dr/mm3) using the exact conversion factor (1 pound per cubic foot = 0.0000090406 dram per cubic millimeter). See the formula, worked examples, conversion table, and common uses.
Pounds per Cubic foot to Drams per Cubic Millimeter 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 16.01846337 / 1.7718452e+6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Cubic foot to Drams per Cubic Millimeter
Pound per Cubic foot and Dram per Cubic Millimeter 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. Pound per Cubic foot is most often used for us construction material density specs (concrete, soil, lumber, insulation).
Formula
drams per cubic millimeter = pounds per cubic foot × 0.0000090405546807
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cubic foot equals 16.018463374 base units, and 1 dram per cubic millimeter equals 1771845.19531 base units, so dividing one by the other gives the direct pound per cubic foot-to-dram per cubic millimeter factor of 0.0000090405546807.
Simple example
1 lb/ft3 × 0.000009040554681 = 0.0000090406 dr/mm3
1 pound per cubic foot = 0.0000090406 drams per cubic millimeter.
Real-world example
1,000 lb/ft3 × 0.000009040554681 = 0.0090405547 dr/mm3
1,000 pounds per cubic foot = 0.0090405547 drams per cubic millimeter.
Conversion table
| Pound per Cubic foot (lb/ft3) | Dram per Cubic Millimeter (dr/mm3) |
|---|---|
| 0.1 lb/ft3 | 9.040555e-7 dr/mm3 |
| 1 lb/ft3 | 0.0000090406 dr/mm3 |
| 10 lb/ft3 | 0.0000904055 dr/mm3 |
| 100 lb/ft3 | 0.0009040555 dr/mm3 |
| 1,000 lb/ft3 | 0.0090405547 dr/mm3 |
| 10,000 lb/ft3 | 0.0904055468 dr/mm3 |
Reverse conversion: Dram per Cubic Millimeter to Pound per Cubic foot
0.0000090406 dr/mm3 × 110612.682 = 1.000005013 lb/ft3
0.0000090406 drams per cubic millimeter = 1.000005013 pounds per cubic foot.
pounds per cubic foot = drams per cubic millimeter × 110612.682
For a page dedicated to this direction, see Dram per Cubic Millimeter to Pound per Cubic foot.
Understanding the Pound per Cubic foot
Pound per Cubic foot (lb/ft3) measures density. The US customary unit for expressing density, commonly used in construction and engineering material specifications. It is classified as a US customary density unit.
Where it's used: United States (construction, engineering, materials specifications)
Uses of the Pound per Cubic foot today
- US construction material density specs (concrete, soil, lumber, insulation)
- US engineering material property tables
- Bulk material handling and shipping weight estimates
Understanding the Dram per Cubic Millimeter (dr/mm3)
Mass per volume density.
Pound per Cubic foot — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many drams per cubic millimeter are in 1 pound per cubic foot?
1 pound per cubic foot equals 0.0000090406 drams per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic foot to dram per cubic millimeter?
Multiply the pound per cubic foot value by 0.000009040554681. The converter above does this instantly to whatever precision you set.
How do I convert dram per cubic millimeter back to pound per cubic foot?
Use the reverse factor: 1 dram per cubic millimeter equals 110,612.682 pounds per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cubic foot?
Pound per Cubic foot (lb/ft3) measures density. The US customary unit for expressing density, commonly used in construction and engineering material specifications. It is classified as a US customary density unit.
What is a dram per cubic millimeter?
Dram per Cubic Millimeter (dr/mm3) is a unit of density.
Is the pound per cubic foot to dram per cubic millimeter conversion exact?
Yes. Both pound per cubic foot and dram per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.000009040554681 used above is exact to as many digits as you choose to display.
Where is the pound per cubic foot still used today?
United States (construction, engineering, materials specifications)
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.