# Cube

## Perimeter, surface area, volume of cube

This is the best cube calculator on-line you have ever seen.

### Calculation

Enter a value to any field - the others are calculated themselves. If you change a value in any field, the others are automatically recalculated.

For decimals you can enter either **points** or **commas**

as decimal marks (but only one decimal point in a value).

The result will be in the units that you enter into the fields.

For example: if you enter centimeters, calculation will be also in centimeters.

If appears an error **NaN**, check whether you enter to the field

a correct value, ie. **without any letters and other characters**.

### Formula

(total length of edges) |
O = |
12 × a | [m] |

P = |
a × a = a² | [m²] | |

Q = |
6 × P_{1} = 6 × a² |
[m²] | |

V = |
a × a × a = a³ | [m³] | |

u =_{2} |
a √2 ≈ a × 1,41 | [m] | |

u =_{3} |
a √3 ≈ a × 1,73 | [m] |

**a** … length of one edge

**u _{2}** … face diagonal

**u _{3}** … space/volume diagonal

**S** … center of cube

**o** … axis

### Cube and Sphere

**Space/volume diagonal** (u_{3}) = diameter of circumscribed sphere

**Length of side edge** (a) = diameter of inscribed sphere

### Calculation of cube online

### Links

### How to calculate ...

Bold shapes and objects are already in operation. The others contain only a formula.

**Circle**- online calculator**Square**- online calculator**Sphere**- online calculator**Cylinder**- online calculator- Triangle
**Rectangle**- online calculator- Cuboid
- Ellipse

**GEOMETRY**- disambiguation

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