Measure concrete jobs faster with flexible inputs. Review volumes, totals, and pricing before ordering materials. Build accurate estimates for slabs, walls, footings, and columns.
| Project | Shape | Dimensions | Net Volume | Waste | Rate Basis | Total Estimate |
|---|---|---|---|---|---|---|
| Driveway Slab | Rectangular Slab | 10 m × 5 m × 0.15 m | 7.500 m³ | 8% | $115 per m³ + extras | $1,874.72 |
| Boundary Wall | Wall | 20 m × 2.5 m × 0.15 m | 7.500 m³ | 7% | Site-mix material pricing | $1,965.35 |
| Pad Footing | Footing | 2 m × 2 m × 0.6 m | 2.400 m³ | 10% | $130 per m³ + pump | $745.56 |
1. Shape volume
Slab or footing = length × width × thickness
Wall = length × height × thickness
Beam or rectangular column = length × width × height
Cylindrical column = π × radius² × height
2. Waste-adjusted order volume
Order volume = net volume × (1 + waste percentage ÷ 100)
3. Ready-mix concrete cost
Concrete cost = order volume × ready-mix rate
4. Site-mix material cost
Dry volume = wet concrete volume × dry volume factor
Material share = dry volume × ratio part ÷ total ratio parts
Cement bags = (cement volume × cement density) ÷ bag weight
5. Final project total
Subtotal = concrete cost + labor + reinforcement + pump + finishing + equipment + delivery + permit
Final total = subtotal + markup − discount + tax
Net volume is the exact concrete needed from geometry. Order volume adds your waste percentage, helping cover spillage, uneven grades, over-excavation, and small measuring errors during placement.
Waste protects the budget from shortages. Concrete jobs often lose some material during transport, pumping, formwork leakage, surface leveling, and cleanup. A small allowance reduces costly reorders.
Use ready-mix pricing when your supplier quotes a delivered rate per cubic meter or cubic yard. It works well for larger pours, faster jobs, and projects with strict quality consistency requirements.
Choose site-mix pricing when you buy cement, sand, and aggregate separately. It helps compare manual mixing costs against supplier quotes and gives a clearer view of raw material demand.
Yes. Labor hours, labor rate, delivery, finishing, reinforcement, pump, equipment, permit, markup, discount, and tax can all be included in the final estimate.
Usually, reinforcement is priced as a separate cost item. It does not significantly change ordered concrete volume for most estimates, but it can affect labor time and total installed cost.
It is an estimating tool, not a supplier invoice. Accuracy depends on input quality, mix assumptions, local pricing, labor productivity, and whether hidden jobsite conditions change the scope.
This version supports slabs, walls, footings, beams, rectangular columns, cylindrical columns, and direct custom volume entry. That covers many routine residential and commercial concrete jobs.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.