Mass per volume density.
Kilograms per Quart to Pounds per Cubic foot Converter — kg/qt to lb/ft3
Convert Kilogram per Quart (kg/qt) to Pound per Cubic foot (lb/ft3) using the exact conversion factor (1 kilogram per quart = 65.96688988 pound per cubic foot). See the formula, worked examples, conversion table, and common uses.
Kilograms per Quart to Pounds per Cubic foot 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 1056.688209 / 16.01846337.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Kilograms per Quart to Pounds per Cubic foot
Kilogram per Quart and Pound per Cubic foot 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 foot = kilograms per quart × 65.9668898797
This factor comes from each unit's defined relationship to the category's base unit: 1 kilogram per quart equals 1056.68820943 base units, and 1 pound per cubic foot equals 16.018463374 base units, so dividing one by the other gives the direct kilogram per quart-to-pound per cubic foot factor of 65.9668898797.
Simple example
1 kg/qt × 65.96688988 = 65.96688988 lb/ft3
1 kilogram per quart = 65.96688988 pounds per cubic foot.
Real-world example
1,000 kg/qt × 65.96688988 = 65,966.88988 lb/ft3
1,000 kilograms per quart = 65,966.88988 pounds per cubic foot.
Conversion table
| Kilogram per Quart (kg/qt) | Pound per Cubic foot (lb/ft3) |
|---|---|
| 0.1 kg/qt | 6.596688988 lb/ft3 |
| 1 kg/qt | 65.96688988 lb/ft3 |
| 10 kg/qt | 659.6688988 lb/ft3 |
| 100 kg/qt | 6,596.688988 lb/ft3 |
| 1,000 kg/qt | 65,966.88988 lb/ft3 |
| 10,000 kg/qt | 659,668.8988 lb/ft3 |
Reverse conversion: Pound per Cubic foot to Kilogram per Quart
65.96688988 lb/ft3 × 0.01515912 = 1 kg/qt
65.96688988 pounds per cubic foot = 1 kilograms per quart.
kilograms per quart = pounds per cubic foot × 0.0151591200043
For a page dedicated to this direction, see Pound per Cubic foot to Kilogram per Quart.
Understanding the Kilogram per Quart (kg/qt)
Mass per volume density.
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
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 pounds per cubic foot are in 1 kilogram per quart?
1 kilogram per quart equals 65.96688988 pounds per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert kilogram per quart to pound per cubic foot?
Multiply the kilogram per quart value by 65.96688988. The converter above does this instantly to whatever precision you set.
How do I convert pound per cubic foot back to kilogram per quart?
Use the reverse factor: 1 pound per cubic foot equals 0.01515912 kilograms per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a kilogram per quart?
Kilogram per Quart (kg/qt) is a unit of density.
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.
Is the kilogram per quart to pound per cubic foot conversion exact?
Yes. Both kilogram per quart and pound per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 65.96688988 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.