Cubic Meters to Cubic Feet
Convert cubic meters (m³) to cubic feet (ft³). Both measure capacity and volume, and the conversion comes up in cooking, chemistry, fuel work.
The Formula
``
cubic feet = cubic meters × 35.3146667215
cubic meters = cubic feet × 0.028316846592
`
One cubic meter is 35.3147 cubic feet, and one cubic feet is 0.028317 cubic meters.
Conversion Table
| Cubic Meters | Cubic Feet |
|---|---|
| 1 m³ | 35.3147 ft³ |
| 2 m³ | 70.6293 ft³ |
| 5 m³ | 176.5733 ft³ |
| 10 m³ | 353.1467 ft³ |
| 25 m³ | 882.8667 ft³ |
| 50 m³ | 1,765.73 ft³ |
| 100 m³ | 3,531.47 ft³ |
| 500 m³ | 17,657.33 ft³ |
| 1,000 m³ | 35,314.67 ft³ |
The Other Direction
| Cubic Feet | Cubic Meters |
|---|---|
| 1 ft³ | 0.028317 m³ |
| 2 ft³ | 0.056634 m³ |
| 5 ft³ | 0.141584 m³ |
| 10 ft³ | 0.283168 m³ |
| 25 ft³ | 0.707921 m³ |
| 50 ft³ | 1.4158 m³ |
| 100 ft³ | 2.8317 m³ |
| 500 ft³ | 14.1584 m³ |
| 1,000 ft³ | 28.3168 m³ |
What Each Unit Is
Cubic Meters (m³) — the volume of a cube one metre on each side, equal to 1,000 litres. The SI derived unit of volume.
Cubic Feet (ft³) — the volume of a cube one foot on each side, or 28.3168 litres. The imperial volume unit for freight, appliances and ventilation.
A Sense of Scale
A cubic metre of water weighs 1 tonne- Domestic gas and water are billed per m³
- A domestic fridge is 18–25 ft³
- Airflow is rated in cubic feet per minute
Doing It in Your Head
Multiply by 35. That is off by 0.89% — close enough to judge a
distance, a weight or a price, and not close enough to sign off on a drawing.
Exact Mental shortcut 353.1467 ft³ 350 ft³ 3,531.47 ft³ 3,500 ft³
Precision
The factor 35.3146667215 is rounded. For engineering work carry more digits than the table above, and round only at the end — rounding at each step compounds.
In Code
`javascript
const cubicMeterToCubicFoot = (value) => value * 35.3146667215;
``
Where This Conversion Comes Up
- Cooking
- Chemistry
- Fuel
- Beverages
- Medicine
How Many Decimals Do You Need?
Rounding the factor costs accuracy, and how much depends on the factor. Converting 137 m³ with the factor truncated at each decimal place:
| Decimals kept | Factor | 137 m³ becomes | Error |
|---|---|---|---|
| 0 | 35 | 4,795 | 0.8910% |
| 1 | 35.3 | 4,836.1 | 0.0415% |
| 2 | 35.31 | 4,837.47 | 0.0132% |
| 3 | 35.315 | 4,838.16 | 0.0009% |
| 4 | 35.3147 | 4,838.11 | — |
The right number of significant figures is set by your input, not by the converter. If you measured cubic meters to three significant figures, the answer in cubic feet is only good to three — writing more digits claims precision the measurement never had.