How to use the cube calculator
Find the volume, surface area and space diagonal of a cube from its edge. Enter edge length in the field above; the volume, surface area, space diagonal are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “cube volume and surface area”, “cube space diagonal”, “cube calculator”, “calculate cube”, “find volume”.
Formula
Variables
- a — Edge length (cm)
Worked example
With edge length = 5 cm, the calculator gives volume ≈ 125 cm³; surface area ≈ 150 cm²; space diagonal ≈ 8.660254 cm.
Frequently asked questions
What is the cube calculator used for?
Find the volume, surface area and space diagonal of a cube from its edge. It helps with questions such as “cube volume and surface area”, “cube space diagonal”, “cube calculator”.
What is the formula for the cube calculation?
Volume (cm³) = a^3. Surface area (cm²) = 6 × a × a. Space diagonal (cm) = √(3) × a. Here a is edge length (cm).
What inputs do I need for the cube calculator?
You need edge length in cm. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the cube calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the cube result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.