Cubic metres are the SI unit of volume, used for concrete, water, gas meters, freight and room air volume. One cubic metre is 1,000 litres, about 35.3 cubic feet.
How to use the Cubic Meter Calculator
- Length
- Width
- Height (depth)
- Every result field is editable: type into Volume or any other result and Height (depth) plus every other field update to match.
Results update as you type, and every field accepts the units shown in its menu.
How it works
Each dimension is converted to metres, the three are multiplied, and the volume is shown in every unit. Mix units freely, for example feet and inches. Type a target volume into a result to solve for the height.
Inputs explained
| Field | What to enter |
|---|---|
| Length | Units: m, km, cm, mm, in, ft … |
| Width | Units: m, km, cm, mm, in, ft … |
| Height (depth) | Units: m, km, cm, mm, in, ft … |
What each result means
- Volume = [Length] × [Width] × [Height (depth)]
- In cubic feet = [Length] × [Width] × [Height (depth)]
- In litres = [Length] × [Width] × [Height (depth)]
- In US gallons = [Length] × [Width] × [Height (depth)]
Example values
How the main result changes when Height changes and everything else stays at the example values above:
| Height (depth) (m) | Volume (m³) |
|---|---|
| 0.25 | 1.5 |
| 0.375 | 2.25 |
| 0.5 | 3 |
| 0.625 | 3.75 |
| 0.75 | 4.5 |
| 1 | 6 |
Formula
volume = length × width × heightWorked example
Inputs — Length: 3 m; Width: 2 m; Height (depth): 0.5 m.
Results — Volume = 3 m³; In cubic feet = 105.944 ft³; In litres = 3,000 L; In US gallons = 792.5 US gal.
Frequently asked questions
How many litres in a cubic metre?
1,000.
How many cubic feet in a cubic metre?
About 35.31.
How do I find cubic metres from centimetres?
Multiply the three dimensions in cm and divide by 1,000,000.
What formula does the Cubic Meter Calculator use?
volume = length × width × height.