Mass per volume density.
Grams per Cubic foot to Kilograms per Cubic Meter Converter — g/ft3 to kg/m3
Convert Gram per Cubic foot (g/ft3) to Kilogram per Cubic Meter (kg/m3) using the exact conversion factor (1 gram per cubic foot = 0.0353146667 kilogram per cubic meter). See the formula, worked examples, conversion table, unit comparison, and common uses.
Grams 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 0.03531466672 / 1.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams per Cubic foot to Kilograms per Cubic Meter
Gram 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. Gram per Cubic foot is most often used for can be used to express the density of low-density materials such as insulation foam, packaging material, or gas concentration by volume — for typical solid or liquid materials, kilograms per cubic meter or pounds per cubic foot are more commonly encountered.
Formula
kilograms per cubic meter = grams per cubic foot × 0.0353146667215
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per cubic foot equals 0.0353146667215 base units, and 1 kilogram per cubic meter equals 1 base unit, so dividing one by the other gives the direct gram per cubic foot-to-kilogram per cubic meter factor of 0.0353146667215.
Simple example
1 g/ft3 × 0.03531466672 = 0.0353146667 kg/m3
1 gram per cubic foot = 0.0353146667 kilograms per cubic meter.
Real-world example
1,000 g/ft3 × 0.03531466672 = 35.31466672 kg/m3
1,000 grams per cubic foot = 35.31466672 kilograms per cubic meter.
Conversion table
| Gram per Cubic foot (g/ft3) | Kilogram per Cubic Meter (kg/m3) |
|---|---|
| 0.1 g/ft3 | 0.0035314667 kg/m3 |
| 1 g/ft3 | 0.0353146667 kg/m3 |
| 10 g/ft3 | 0.3531466672 kg/m3 |
| 100 g/ft3 | 3.531466672 kg/m3 |
| 1,000 g/ft3 | 35.31466672 kg/m3 |
| 10,000 g/ft3 | 353.1466672 kg/m3 |
Reverse conversion: Kilogram per Cubic Meter to Gram per Cubic foot
0.0353146667 kg/m3 × 28.31684659 = 0.9999999994 g/ft3
0.0353146667 kilograms per cubic meter = 0.9999999994 grams per cubic foot.
grams per cubic foot = kilograms per cubic meter × 28.316846592
For a page dedicated to this direction, see Kilogram per Cubic Meter to Gram per Cubic foot.
Gram per Cubic foot vs. Kilogram per Cubic Meter
| Aspect | Gram 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 low-density materials such as insulation foam, packaging material, or gas concentration by volume — for typical solid or liquid materials, kilograms per cubic meter or pounds per cubic foot are more commonly encountered | Physics and engineering reference density values |
Understanding the Gram per Cubic foot
Gram per Cubic foot (g/ft3) measures density. A gram is a small mass unit and a cubic foot a comparatively large volume, so this combination naturally suits low-density materials rather than typical solids or liquids. It is classified as a mixed metric/US customary density unit.
Uses of the Gram per Cubic foot today
- Can be used to express the density of low-density materials such as insulation foam, packaging material, or gas concentration by volume — for typical solid or liquid materials, kilograms per cubic meter or pounds per cubic foot are more commonly encountered
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
Gram per Cubic foot — sources
- BIPM SI Brochure — Gram and cubic foot as units combinable to express density, though not a standard industry pairing for general materials.
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 gram per cubic foot?
1 gram per cubic foot equals 0.0353146667 kilograms per cubic meter, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cubic foot to kilogram per cubic meter?
Multiply the gram per cubic foot value by 0.03531466672. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cubic meter back to gram per cubic foot?
Use the reverse factor: 1 kilogram per cubic meter equals 28.31684659 grams per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per cubic foot?
Gram per Cubic foot (g/ft3) measures density. A gram is a small mass unit and a cubic foot a comparatively large volume, so this combination naturally suits low-density materials rather than typical solids or liquids. 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 gram per cubic foot to kilogram per cubic meter conversion exact?
Yes. Both gram per cubic foot and kilogram per cubic meter are defined by fixed standards rather than physical artifacts, so the factor of 0.03531466672 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.