Cubic meters to cubic feet
Multiply cubic meters by 35.3147 to get cubic feet.
7.5 m³ = 264.86 ft³
Worked examples
One cubic meter is 35.3147 cubic feet. The exact factor is 1 / 0.3048³, because the international foot is 0.3048 m and a cubic foot is that length cubed.
A room 2 m by 3 m by 2.5 m has a volume of 15 m³, which is 529.72 ft³. That is the figure a US HVAC rule of thumb would use if the room had been measured in feet.
Cubic meters to cubic feet table
| Cubic meters | Cubic feet |
|---|---|
| 0.5 m³ | 17.6573 ft³ |
| 0.6 m³ | 21.1888 ft³ |
| 0.7 m³ | 24.7203 ft³ |
| 0.75 m³ | 26.486 ft³ |
| 0.8 m³ | 28.2517 ft³ |
| 0.9 m³ | 31.7832 ft³ |
| 1 m³ | 35.3147 ft³ |
| 1.5 m³ | 52.972 ft³ |
| 2 m³ | 70.6293 ft³ |
| 2.5 m³ | 88.2867 ft³ |
| 3 m³ | 105.944 ft³ |
| 4 m³ | 141.2587 ft³ |
| 5 m³ | 176.5733 ft³ |
| 6 m³ | 211.888 ft³ |
| 7 m³ | 247.2027 ft³ |
| 7.5 m³ | 264.86 ft³ |
| 8 m³ | 282.5173 ft³ |
| 9 m³ | 317.832 ft³ |
| 10 m³ | 353.1467 ft³ |
| 15 m³ | 529.72 ft³ |
| 20 m³ | 706.2933 ft³ |
| 25 m³ | 882.8667 ft³ |
| 30 m³ | 1,059.44 ft³ |
| 40 m³ | 1,412.5867 ft³ |
| 50 m³ | 1,765.7333 ft³ |
| 60 m³ | 2,118.88 ft³ |
| 70 m³ | 2,472.0267 ft³ |
| 75 m³ | 2,648.6 ft³ |
| 80 m³ | 2,825.1733 ft³ |
| 90 m³ | 3,178.32 ft³ |
| 100 m³ | 3,531.4667 ft³ |
Reverse and related
About cubic meters and cubic feet
The cubic meter is a cube one meter on a side, exactly 1,000 liters. The cubic foot is a cube one international foot (0.3048 m) on a side, exactly 28.316846592 liters. Dividing those volumes gives the factor on this page.
Where people use this
Shipping, storage, and wholesale natural gas are quoted in cubic meters in SI countries and in cubic feet in the United States. A 20 m³ shipment is 706.29 ft³; a 2,000 ft³ crate is 56.63 m³.
Concrete, excavation, and indoor air volume go the same way: an architect’s SI drawing states m³, a US equipment sheet states ft³, and this factor is the bridge.
Common mistakes
Do not multiply by 35 or by 10.76 (that 10.76 figure is square feet per square meter, an area factor). Volume scales with the cube of the foot, so 0.3048³ = 0.028316846592 m³ per ft³, or 35.3147 ft³ per m³. The US survey foot, now retired for new work, differs only in the seventh significant figure and does not change a building-scale result at the 0.01 ft³ level.
Sources: NIST Handbook 44, Appendix C §2 (U.S. Customary Units) and §5 (Tables of Equivalents); BIPM SI Brochure (2019); the cubic metre (m³) is the coherent SI unit of volume, the cube of the metre (1 m³ = 1000 L).
Sources
Questions people ask
How many cubic feet are in a cubic meter?
35.3147 ft³, exactly 1 / 0.3048³. One cubic meter is also exactly 1,000 liters.
How many cubic feet is 15 m³?
15 m³ is 529.72 ft³. Multiply cubic meters by 35.3147.
How many cubic meters is 1,000 ft³?
1,000 ft³ is 28.3168 m³, because 1 ft³ is 0.028316846592 m³.
Is this the same factor as m² to ft²?
No. Area uses 0.3048² (10.7639 ft² per m²). Volume uses 0.3048³ (35.3147 ft³ per m³).