Inputs
Adds contingency for spillage, edge thickening, and uneven subgrade.
Adjust per brand; typical pre-mix ~0.012 m³ per 25 kg.
Segments (m × m × mm)
| # | Length (m) | Width (m) | Thickness (mm) | Area (m²) | Volume (m³) | |
|---|---|---|---|---|---|---|
| Totals (no waste): | 0.000 | 0.000 | ||||
Results
Total volume (no waste)
0.000 m³
Waste allowance
+0%
Total volume (with waste)
0.000 m³
Also shown
0.000 yd³
Estimated bags (based on yield)
0 bags
Truckload guide
Capacities vary by supplier; confirm local availability and minimums.
Example Data Table
Sample three‑segment driveway; use the “Load example” button to populate inputs.
| # | Length (m) | Width (m) | Thickness (mm) | Area (m²) | Volume (m³) |
|---|---|---|---|---|---|
| Totals (no waste): | 0.000 | 0.000 | |||
Formula Used
For each segment: Area = Length × Width, with Length and Width in meters.
Thickness in millimeters is converted to meters: t = thickness_mm ÷ 1000.
Segment volume: V = Area × t. Total volume is the sum of segment volumes.
Waste allowance is applied as V_waste = V × (1 + waste_pct/100).
Conversion: 1 m³ = 1.30795062 yd³.
Slope does not change volume if thickness is measured perpendicular to grade.
How to Use
- Enter a waste percentage appropriate for your site conditions.
- Add driveway segments; set length, width, and thickness for each.
- Optionally adjust bag yield if using pre‑mixed bagged concrete.
- Review results: total m³, yd³, estimated bags, and truckload guide.
- Export CSV or PDF for records and ordering discussions.
FAQs
No, not if thickness is measured perpendicular to the surface. The prismatic volume is length × width × thickness regardless of slope.
Common allowances are 5–10% for residential driveways. Increase for complex edges, soft subgrade, or aggressive finishing.
Bagged concrete yields vary by brand and mix. Adjust the bag‑yield field to your product’s stated yield for best results.
Suppliers often run 6–10 m³ trucks, sometimes larger. Use the guide here as a starting point and confirm with your local plant.
Yes. Model aprons or flares as additional segments with their specific dimensions and thickness.