# Cubic Meter Calculator

URL: https://speedycalculator.com/calculators/conversion/cubic-meter-calculator/
Last updated: 2026-10-25

> The cubic meter calculator works out the volume of a box, room, trench or container from its length, width and height, in cubic metres and other units, plus how many litres or gallons it holds.

## Inputs

- Length (m, km, cm, mm, in, ft, yd)
- Width (m, km, cm, mm, in, ft, yd)
- Height (depth) (m, km, cm, mm, in, ft, yd)

## Results

- Volume
- In cubic feet
- In litres
- In US gallons

## Formula

```
volume = length × width × height
```

## Explanation

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

FieldWhat to enterLengthUnits: m, km, cm, mm, in, ft …WidthUnits: 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)0.251.50.3752.250.530.6253.750.754.516

## Worked 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.

## FAQ

**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.


## Sources

- [NIST Special Publication 811 – Guide for the Use of the International System of Units](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44 Appendix C – General tables of units of measurement](https://www.nist.gov/pml/owm/nist-handbook-44-current-edition)