Cube Calculator
Calculate a cube's volume, surface area, face diagonal, and space diagonal from edge length. Ideal for math students and teachers.
📊 Result Chart
About Cube Calculator
A cube calculator is an essential geometry tool for students, teachers, and engineers. With just one input — the edge length — you get all four key measurements: volume, surface area, face diagonal, and space diagonal. No manual formula memorization required.
Cube Calculator in 3 steps
- Enter the edge length of the cube
- View instant results for all measurements
- Adjust edge length to compare dimensions
Frequently Asked Questions
What formulas does this cube calculator use?
Volume = a³ (edge length cubed). Surface Area = 6a². Face Diagonal = a√2. Space Diagonal = a√3. All calculations are performed client-side with high precision.
Can I use different units?
Yes, the calculator accepts any unit — the outputs will use the same unit type (cubed for volume, squared for area). Simply enter the numeric value without a unit suffix.
What is face diagonal vs space diagonal?
The face diagonal runs across one face of the cube (a√2), while the space diagonal runs through the interior from one vertex to the opposite vertex (a√3).