Calculate concrete volume for a rectangular slab or footing from length, width and depth.
Formula
Rectangular volume = length × width × depth. Waste allowance is added after the base volume.
Example: 4 m × 3 m × 10 cm = 1.2 m³ before waste.
Scope
This calculates volume only. It does not determine mix design, structural adequacy, reinforcement or local code requirements.