Quikrete bag estimator and cost planner
Quikrete Calculator
Answer first: calculate Quikrete bags, cubic yards, and cost from slab dimensions or a known volume. Compare bagged Quikrete with ready-mix delivery, check waste, minimum loads, and quote totals before buying.
10 ft x 10 ft x 4 in slab
about 56 bags of Quikrete
At 0.6 ft3 per 80 lb bag with 10% waste. Adjust bag yield to match your Quikrete mix.
1 cubic yard
about 45 bags at 0.6 ft3
Quikrete 80 lb bags cover 0.6 ft3 each. Check the bag label for your exact yield.
Calculate Quikrete bags, yards, and cost
Enter slab dimensions or switch to known volume. Compare Quikrete bags with ready-mix delivery, then check the total before buying.
Volume
1.36 yd3
Quikrete bags
62
Ready-mix cost
$367
Bagged cost
$310
Interactive workflow
Run the numbers, then save or export the project
Save this estimate or download a PDF report
The PDF report uses the current calculated result. Save the estimate first when you want to reuse the inputs later.
What ordinary Quikrete calculators miss
The useful result is not only a bag count. It is the waste factor, cost per yard, and delivery comparison that decide whether bags or ready-mix is the right choice.
| Benchmark says | Replace with local input | Next check |
|---|---|---|
| Fixed bag size | Adjust the bag yield to match 80 lb, 60 lb, 40 lb, or specialty Quikrete mixes. | Check the bag label for cubic feet per bag before ordering. |
| Ignores waste | Add a waste factor so the bag count reflects real pour conditions. | Use 5% for clean forms, 10% for typical pours, and more for uneven ground. |
| No cost comparison | Compare Quikrete bag cost with ready-mix delivery cost side by side. | Order the cheaper path after confirming local prices and availability. |
Quikrete ordering checklist
Use these checks before buying or ordering Quikrete for your project.
| Signal to check | What it means | Next step |
|---|---|---|
| Bag size and yield | The bag yield matches the Quikrete mix and bag size you will buy. | Quikrete 80 lb bags yield 0.6 ft3; 60 lb bags yield 0.45 ft3. |
| Waste factor | The waste percentage matches site conditions and pour complexity. | Increase waste for uneven trenches, over-excavation, or complex shapes. |
| Bags vs ready-mix | The bag cost is compared with ready-mix delivery for the same volume. | For pours over 1-2 yards, ready-mix is often cheaper after delivery fees. |
| Storage and handling | You have space to store bags, mix water, and place the pour. | Plan mixing time and labor for bagged pours larger than 1 yard. |
Related concrete planning tools
Move from a single calculation into a purchase, proposal, or pour-day decision with connected calculators and checklists.
How many Quikrete bags do I need?
Enter your slab length, width, and thickness. The calculator converts dimensions to cubic feet, adds your waste factor, then divides by the bag yield (0.6 ft3 for 80 lb Quikrete) to show the bag count.
How many Quikrete bags are in a cubic yard?
At 0.6 cubic feet per 80 lb bag, one cubic yard (27 ft3) takes about 45 Quikrete bags. Adjust the bag yield to match 60 lb (0.45 ft3) or other bag sizes.
Should I use Quikrete bags or ready-mix?
For small pours under 1 to 2 yards, Quikrete bags can be cheaper after delivery fees. For larger pours, ready-mix is usually cheaper per yard. Use the calculator to compare both with your local prices.
Can I use this calculator for a Quikrete slab?
Yes. Enter the slab dimensions and the calculator estimates Quikrete bag count, yardage, and cost. Use the slab calculator for project-type presets and thickness defaults.
Does this calculator work for Quikrete sonotube or post holes?
Yes, but use the concrete post hole calculator or form tube calculator for round holes. This page is best for rectangular slabs, pads, and known-volume estimates.
Planning disclaimer
This calculator provides planning estimates from dimensions and user-entered prices. Quikrete is a registered trademark of Quikrete Companies; this page is not affiliated with or endorsed by Quikrete. Confirm actual bag yields, prices, and availability with your supplier before ordering.