# Convert CFT to cubic meters

Converts cubic feet (ft³) to cubic meters (m³) and back, with the exact unit definitions.

- Page: https://www.acalculator.org/convert/cft
- JSON spec: https://www.acalculator.org/convert/cft.json
- Version: 13c329de5402

## Default answer

Example with the default inputs (Cubic feet (ft³) 1): 1 ft³ = 0.028317 m³.

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| value | Cubic feet (ft³) | The amount in cubic feet to convert. |
| result | Cubic meters (m³) | The same amount in cubic meters. |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| value | Cubic feet (ft³) | The amount in cubic feet to convert. |
| result | Cubic meters (m³) | The amount in cubic meters. |

## Method

m³ = ft³ × 0.028316846592

## Assumptions

- 1 cubic foot = 0.028316846592 cubic meters, from the exact definitions in NIST SP 811.
- Cups, ounces, tablespoons, teaspoons, pints, quarts, and gallons are US customary units: 1 US cup is 8 US fluid ounces.
- Exact on the typed decimals: at most 6 decimal places (6 significant digits below 0.0001), rounded half up.

## Worked examples

1. value = 1 gives result = 0.028317. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
2. value = 100 gives result = 2.831685. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
3. result = 2.831685 gives value = 100. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.

## FAQ

### How many cubic meters are in a cubic foot?

1 cubic foot is 0.028317 cubic meters, from the exact unit definitions (NIST SP 811).

### How do I convert cubic feet to cubic meters?

Multiply by 0.028317: m³ = ft³ × 0.028316846592. For example, 1 ft³ × 0.028317 = 0.028317 m³.

### How do I convert cubic meters back to cubic feet?

Multiply by 35.314667, or type the cubic meters into the second box and the converter works it out. 1 cubic meter is 35.314667 cubic feet.

### What does CFT mean?

CFT is short for cubic feet (ft³), the volume of a cube 1 foot on each side. It is used for wood, sand, aggregate, freight, and refrigerator sizes.

### How do I find the cubic feet of a box or a pile?

Multiply length × width × height, all in feet: a 4 × 3 × 2 ft box is 24 cft. Then convert here. The cubic feet calculator in the construction section does the multiplying, with inches and other units.

### How many cubic feet are in a cubic meter?

1 m³ is 1 ÷ 0.028316846592 = 35.3147 cubic feet, because a foot is exactly 0.3048 m and 0.3048³ = 0.028316846592.

## Sources

- NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B.8. https://www.nist.gov/pml/special-publication-811