Concrete Volume Calculator vs Roof Area Calculator
Two calculators for the same neighbourhood of questions. Here is what each measures, what you feed in, and where you'd reach for one over the other.
Concrete Volume Calculator
Estimate how many cubic metres of concrete to order for a rectangular slab, footing, or path. Multiply length × width × depth for the in-place volume — add a 5–10% waste allowance before placing the order.
- Answers
- Concrete Volume Needed (m³)
- Inputs
- Length, Width, Depth
Roof Area Calculator
Calculate the true sloped surface area of a roof from its footprint dimensions and pitch angle. The slope multiplier (1/cos(pitch)) corrects for the fact that a pitched roof has more material area than the horizontal footprint it covers.
- Answers
- Roof Surface Area (m²)
- Inputs
- Roof Length, Roof Width, Roof Pitch
At a glance
| Concrete Volume Calculator | Roof Area Calculator | |
|---|---|---|
| Category | Construction | Construction |
| Answers | Concrete Volume Needed | Roof Surface Area |
| Inputs | 3 | 3 |
| Result unit | m³ | m² |
When to use each
Estimate how many cubic metres of concrete to order for a rectangular slab, footing, or path. Multiply length × width × depth for the in-place volume — add a 5–10% waste allowance before placing the order.
Calculate the true sloped surface area of a roof from its footprint dimensions and pitch angle. The slope multiplier (1/cos(pitch)) corrects for the fact that a pitched roof has more material area than the horizontal footprint it covers.