Mass per volume density.
Pounds per Cubic foot to Kilograms per Cubic Meter Converter — lb/ft3 to kg/m3
Convert Pound per Cubic foot (lb/ft3) to Kilogram per Cubic Meter (kg/m3) using the exact conversion factor (1 pound per cubic foot = 16.01846337 kilogram per cubic meter). See the formula, worked examples, conversion table, unit comparison, and common uses.
Pounds per Cubic foot to Kilograms 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 16.01846337 / 1.
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 Kilograms per Cubic Meter
Pound per Cubic foot and Kilogram 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. Pound per Cubic foot is typically associated with united States (construction, engineering, materials specifications), while Kilogram per Cubic Meter is typically associated with universal — the official SI unit for density, used throughout physics and engineering worldwide.
Formula
kilograms per cubic meter = pounds per cubic foot × 16.018463374
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 kilogram per cubic meter equals 1 base unit, so dividing one by the other gives the direct pound per cubic foot-to-kilogram per cubic meter factor of 16.018463374.
Simple example
1 lb/ft3 × 16.01846337 = 16.01846337 kg/m3
1 pound per cubic foot = 16.01846337 kilograms per cubic meter.
Real-world example
1,000 lb/ft3 × 16.01846337 = 16,018.46337 kg/m3
1,000 pounds per cubic foot = 16,018.46337 kilograms per cubic meter.
Conversion table
| Pound per Cubic foot (lb/ft3) | Kilogram per Cubic Meter (kg/m3) |
|---|---|
| 0.1 lb/ft3 | 1.601846337 kg/m3 |
| 1 lb/ft3 | 16.01846337 kg/m3 |
| 10 lb/ft3 | 160.1846337 kg/m3 |
| 100 lb/ft3 | 1,601.846337 kg/m3 |
| 1,000 lb/ft3 | 16,018.46337 kg/m3 |
| 10,000 lb/ft3 | 160,184.6337 kg/m3 |
Reverse conversion: Kilogram per Cubic Meter to Pound per Cubic foot
16.01846337 kg/m3 × 0.06242796058 = 0.9999999998 lb/ft3
16.01846337 kilograms per cubic meter = 0.9999999998 pounds per cubic foot.
pounds per cubic foot = kilograms per cubic meter × 0.0624279605761
For a page dedicated to this direction, see Kilogram per Cubic Meter to Pound per Cubic foot.
Pound per Cubic foot vs. Kilogram per Cubic Meter
| Aspect | Pound per Cubic foot | Kilogram per Cubic Meter |
|---|---|---|
| Family | US customary density unit | SI coherent derived unit |
| Typical use | US construction material density specs (concrete, soil, lumber, insulation) | Physics and engineering reference density values |
| Where it's used | United States (construction, engineering, materials specifications) | Universal — the official SI unit for density, used throughout physics and engineering worldwide |
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 Kilogram per Cubic Meter
Kilogram per Cubic Meter (kg/m3) measures density. The SI coherent unit for density — the form all other metric density/concentration units in this catalog are ultimately defined relative to. It is classified as a SI coherent derived unit.
Where it's used: Universal — the official SI unit for density, used throughout physics and engineering worldwide
kg/m³ vs. g/L vs. kg/L. All three are exactly related: 1 kg/m³ = 1 g/L, and 1,000 kg/m³ = 1 kg/L. kg/m³ is the formal SI-coherent form; g/L and kg/L are more commonly used in everyday and laboratory contexts.
Uses of the Kilogram per Cubic Meter today
- Physics and engineering reference density values
- Material property tables in scientific literature
- Fluid dynamics and structural engineering calculations
Pound per Cubic foot — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Kilogram per Cubic Meter — sources
- BIPM SI Brochure, 9th edition — Kilogram per cubic meter as the SI coherent derived unit for density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per cubic meter are in 1 pound per cubic foot?
1 pound per cubic foot equals 16.01846337 kilograms per cubic meter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic foot to kilogram per cubic meter?
Multiply the pound per cubic foot value by 16.01846337. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cubic meter back to pound per cubic foot?
Use the reverse factor: 1 kilogram per cubic meter equals 0.0624279606 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 kilogram per cubic meter?
Kilogram per Cubic Meter (kg/m3) measures density. The SI coherent unit for density — the form all other metric density/concentration units in this catalog are ultimately defined relative to. It is classified as a SI coherent derived unit.
Is the pound per cubic foot to kilogram per cubic meter conversion exact?
Yes. Both pound per cubic foot and kilogram per cubic meter are defined by fixed standards rather than physical artifacts, so the factor of 16.01846337 used above is exact to as many digits as you choose to display.
What is the difference between kg/m³ vs. g/l vs. kg/l?
All three are exactly related: 1 kg/m³ = 1 g/L, and 1,000 kg/m³ = 1 kg/L. kg/m³ is the formal SI-coherent form; g/L and kg/L are more commonly used in everyday and laboratory contexts.
Where is the pound per cubic foot still used today?
United States (construction, engineering, materials specifications)