Mass per volume density.
Kilograms per Cubic foot to Kilograms per Cubic Meter Converter — kg/ft3 to kg/m3
Convert Kilogram per Cubic foot (kg/ft3) to Kilogram per Cubic Meter (kg/m3) using the exact conversion factor (1 kilogram per cubic foot = 35.31466672 kilogram per cubic meter). See the formula, worked examples, conversion table, unit comparison, and common uses.
Kilograms 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 35.31466672 / 1.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Kilograms per Cubic foot to Kilograms per Cubic Meter
Kilogram 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. Kilogram per Cubic foot is most often used for can be used to express the density of construction and bulk materials such as insulation, soil, or aggregate — in practice, pounds per cubic foot (us) or tons per cubic yard are the units more commonly seen in us construction references.
Formula
kilograms per cubic meter = kilograms per cubic foot × 35.3146667215
This factor comes from each unit's defined relationship to the category's base unit: 1 kilogram per cubic foot equals 35.3146667215 base units, and 1 kilogram per cubic meter equals 1 base unit, so dividing one by the other gives the direct kilogram per cubic foot-to-kilogram per cubic meter factor of 35.3146667215.
Simple example
1 kg/ft3 × 35.31466672 = 35.31466672 kg/m3
1 kilogram per cubic foot = 35.31466672 kilograms per cubic meter.
Real-world example
1,000 kg/ft3 × 35.31466672 = 35,314.66672 kg/m3
1,000 kilograms per cubic foot = 35,314.66672 kilograms per cubic meter.
Conversion table
| Kilogram per Cubic foot (kg/ft3) | Kilogram per Cubic Meter (kg/m3) |
|---|---|
| 0.1 kg/ft3 | 3.531466672 kg/m3 |
| 1 kg/ft3 | 35.31466672 kg/m3 |
| 10 kg/ft3 | 353.1466672 kg/m3 |
| 100 kg/ft3 | 3,531.466672 kg/m3 |
| 1,000 kg/ft3 | 35,314.66672 kg/m3 |
| 10,000 kg/ft3 | 353,146.6672 kg/m3 |
Reverse conversion: Kilogram per Cubic Meter to Kilogram per Cubic foot
35.31466672 kg/m3 × 0.02831684659 = 1 kg/ft3
35.31466672 kilograms per cubic meter = 1 kilograms per cubic foot.
kilograms per cubic foot = kilograms per cubic meter × 0.028316846592
For a page dedicated to this direction, see Kilogram per Cubic Meter to Kilogram per Cubic foot.
Kilogram per Cubic foot vs. Kilogram per Cubic Meter
| Aspect | Kilogram per Cubic foot | Kilogram per Cubic Meter |
|---|---|---|
| Family | mixed metric/US customary density unit | SI coherent derived unit |
| Typical use | Can be used to express the density of construction and bulk materials such as insulation, soil, or aggregate — in practice, pounds per cubic foot (US) or tons per cubic yard are the units more commonly seen in US construction references | Physics and engineering reference density values |
Understanding the Kilogram per Cubic foot
Kilogram per Cubic foot (kg/ft3) measures density. A mathematically valid way to express density in kilograms per cubic foot. It is classified as a mixed metric/US customary density unit.
Uses of the Kilogram per Cubic foot today
- Can be used to express the density of construction and bulk materials such as insulation, soil, or aggregate — in practice, pounds per cubic foot (US) or tons per cubic yard are the units more commonly seen in US construction references
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
Kilogram per Cubic foot — sources
- US construction and materials-estimating references — US construction density figures are typically given in pounds per cubic foot or tons per cubic yard rather than kilograms per cubic foot.
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 kilogram per cubic foot?
1 kilogram per cubic foot equals 35.31466672 kilograms per cubic meter, using the exact defined conversion factor rather than an estimate.
How do I convert kilogram per cubic foot to kilogram per cubic meter?
Multiply the kilogram per cubic foot value by 35.31466672. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cubic meter back to kilogram per cubic foot?
Use the reverse factor: 1 kilogram per cubic meter equals 0.0283168466 kilograms per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a kilogram per cubic foot?
Kilogram per Cubic foot (kg/ft3) measures density. A mathematically valid way to express density in kilograms per cubic foot. It is classified as a mixed metric/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 kilogram per cubic foot to kilogram per cubic meter conversion exact?
Yes. Both kilogram per cubic foot and kilogram per cubic meter are defined by fixed standards rather than physical artifacts, so the factor of 35.31466672 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.