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Rectangular Prism Calculator
Calculate volume, surface area, diagonals, and all box measurements
Rectangular Prism Calculator
Understanding Rectangular Prisms
A rectangular prism (also called a cuboid or rectangular box) is a 3D shape with 6 rectangular faces, 12 edges, and 8 vertices. All angles are right angles (90 degrees). It is one of the most common shapes encountered in everyday life.
Key Properties:
- 6 rectangular faces (3 pairs of congruent opposite faces)
- 12 edges (4 edges of each dimension)
- 8 vertices with 3 edges meeting at each
- All internal angles are 90 degrees
Rectangular Prism Formulas
V = l × w × h
Volume
A = 2(lw + lh + wh)
Surface area
D = √(l² + w² + h²)
Space diagonal
d = √(l² + w²)
Base diagonal