Concrete Slab Cost Calculator
Estimate ready-mix and bagged-concrete material costs from slab dimensions using editable local prices and an optional short-load allowance.
Planning value only; enter your supplier's delivered quote.
Planning value only; enter the current shelf price you found.
Ready-Mix Delivered
2.72 yd³
Bagged DIY
163 × 60 lb bags
Bagged costs exclude tax, mixer rental, and your time. For compare the complete delivered and equipment costs for your job.
Starting values are editable planning assumptions, not live market averages. Confirm concrete price, minimum-order charges, taxes, waiting time, and delivery radius with your local supplier.
Set Prices for Your Local Market
This calculator does not use live market data. Its starting values are illustrative planning inputs so the comparison works immediately. Replace them with a written quote from your ready-mix supplier and the shelf price of the exact bagged product you plan to buy.
| Input | Starting value | How to verify |
|---|---|---|
| Ready-mix price | $160 / yd³ | Supplier quote for the specified mix |
| Short-load allowance | $60 below 3 yd³ | Supplier minimum-load policy |
| 60 lb bag | $5.50 | Current retailer price for the chosen product |
| 80 lb bag | Scaled comparison | Enter actual product pricing before purchase |
Concrete Cost per Square Foot Installed
The calculator reports concrete material only. A complete installed budget needs local quotes for every scope item below. Do not compare its material result directly with a contractor's installed proposal.
| Scope item | Included here? | Budget action |
|---|---|---|
| Concrete material | Yes | Enter supplier or retailer price |
| Delivery and pumping | Partly | Confirm all delivery-zone and equipment fees |
| Excavation, base, and forms | No | Request labor and material quotes |
| Rebar or mesh | No | Use the rebar tool, then price locally |
| Placement and finishing | No | Specify finish and obtain contractor quotes |
| Permits, tax, and testing | No | Confirm local project requirements |
What Drives Concrete Pricing
Six factors move concrete pricing in your local market:
- Distance from the batch plant and the supplier's delivery zone.
- Specified strength, aggregate, fibers, admixtures, slump, and exposure requirements.
- Fuel, tolls, waiting time, washout, environmental, and weekend charges.
- Order quantity, truck capacity, and the supplier's minimum-load policy.
- Season, placement temperature, and any accelerator or hot-water requirement.
- Access constraints that require a pump, conveyor, buggy, or additional labor.
Where Ready-Mix Beats Bagged
The chart plots total cost across project sizes from 0.1 to 5 cubic yards. Slide to compare ready-mix delivered cost against bagged retail cost at any volume — the crossover marker shows where one line crosses the other.
Ready-mix delivered
Cheaper$220
Includes $60 short-load fee
Bagged (60 lb)
$363
66 bags × $5.5
Cheaper option
Ready-mix wins by $143
Crossover sits at 0.28 yd³
Ready-Mix vs. Bagged Cost Comparison
The crossover is not universal. It moves whenever you change the bag price, ready-mix price, or delivery fees. The examples below use the calculator's starting assumptions only.
| Pour size | Ready-mix total | Bagged (60 lb) total | Best option |
|---|---|---|---|
| 0.5 yd³ | ~$140 | ~$165 (30 bags) | Ready-mix (barely) |
| 1 yd³ | ~$220 | ~$330 (60 bags) | Ready-mix |
| 2 yd³ | ~$380 | ~$660 (120 bags) | Ready-mix |
| 5 yd³ | ~$800 | ~$1,650 (300 bags) | Ready-mix |
| 0.25 yd³ (post hole) | ~$100 + fee | ~$45 (8 bags) | Bagged |
Cost Calculator FAQs
How to use local quotes and understand the calculator's material-only estimate.
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