Calculator
What the Cubic Feet Converter does
Cubic Feet Converter: 1 ft³ = 0.028316847 m³, so multiply a cubic foot value by 0.028316847 to get cubic metre, or divide to go back. Example: 1 ft³ = 0.028316847 m³.
From Value, From and To, this tool derives Result, How it was calculated and Reverse conversion. The result recalculates on every keystroke without a button press or a page reload.
It is mostly used by people following a recipe or spec written elsewhere. Two industries often use the same word for slightly different quantities.
Everything happens inside this page. Nothing you type is sent to a server, and there is nothing for us to store.
The method, a field-by-field reference and a worked example built from the defaults are all on this page.
What do the Cubic Feet Converter fields mean?
The Cubic Feet Converter uses 3 inputs. The form opens pre-filled, so the fastest way in is usually to overwrite the one field you actually care about.
| Field | What to enter | Default |
|---|---|---|
| Value | required | 1 |
| From | choose from Millilitre (mL), Centilitre (cL), Litre (L), Cubic metre (m³), Cubic centimetre (cm³) or Cubic inch (in³) | Cubic foot (ft³) |
| To | choose from Millilitre (mL), Centilitre (cL), Litre (L), Cubic metre (m³), Cubic centimetre (cm³) or Cubic inch (in³) | Cubic metre (m³) |
How does the Cubic Feet Converter work?
Both units are converted through volume's base unit (L), so any of the 19 units in the dropdowns can be paired in either direction without loss of accuracy.
Factors follow the internationally agreed definitions. The inch has been exactly 25.4 mm since 1959, and an exact definition is used wherever one exists. Where a unit is fixed by measurement rather than by agreement, the accepted CODATA or IAU value is used.
Worked example
These are the values the Cubic Feet Converter loads by default, and the result it produces from them. These are the tool’s own default values and the result they produce, not an invented illustration.
| Value | 1 |
|---|---|
| From | Cubic foot (ft³) |
| To | Cubic metre (m³) |
| Result | 0.028316847 m³ |
|---|---|
| How it was calculated | 1 ft³ = 0.028316847 m³, so 1 × 0.028316847 = 0.028316847 m³ |
| Reverse conversion | 35.31466672 ft³ (if you meant 1 m³) |
Cubic feet and cubic metres
1 cubic foot equals exactly 0.028316846592 cubic metres, and conversely 1 cubic metre equals about 35.3147 cubic feet: the cube of the linear 0.3048 m foot-to-metre relationship.
Worth knowing
- Refrigerator and appliance capacity in the US is marketed in cubic feet, while the rest of the world uses litres or cubic metres: this is one of the more common real-world reasons someone looks up this specific conversion.
- HVAC airflow in the US is measured in cubic feet per minute (CFM); most other countries use cubic metres per hour (m³/h): converting a fan or air-conditioning spec sheet between the two needs both this volume conversion and a time-unit conversion together.
- A useful sanity check: because the conversion factor is cubed, doubling a room’s linear dimensions multiplies its volume by 8, not 2, a common source of underestimating how much material or airflow a larger space actually needs.
Definitions: BIPM SI Brochure · NIST reference on units
How to use it
- Fill in Value.
- Pick a value for From: the options are Millilitre (mL), Centilitre (cL), Litre (L), Cubic metre (m³), Cubic centimetre (cm³) or Cubic inch (in³).
- Pick a value for To: the options are Millilitre (mL), Centilitre (cL), Litre (L), Cubic metre (m³), Cubic centimetre (cm³) or Cubic inch (in³).
- Type a value and the answer is already there by the time you stop.
- The panel reports Result, How it was calculated and Reverse conversion.
- Both Copy Link and Print capture the current state, so pick whichever suits how you file things.
What this tool does not do
- Repeated conversions compound rounding, so convert once from the original value where you can.
- Conversion factors use SI definitions; some industries use their own rounded factors.
- Assumptions built into the method are stated above, but they are still assumptions.
- Confirm the units before you act on the output. The arithmetic is only as sound as what went in.
Frequently asked questions
The form asks for Value, From and To. A starting value is in place for each, which makes it easy to isolate the effect of a single variable.
With the values loaded when the page opens, result comes out as 0.028316847 m³. It recalculates the moment an input changes, which makes comparing scenarios quick.
No record is kept. We never receive what you type, so there is nothing on our side to retain.
It costs nothing, and there is no limit on repeat use.
Full double precision is used throughout; only the displayed figure is shortened.