Primary material
62 bags
80 lb concrete mix
Use the calculated bag count as your buying starting point, then verify yield and pallet limits with the store.
10 x 10 concrete slab
How much concrete for a 10x10 slab?
A 10 ft by 10 ft slab is 100 square feet. At 4 inches thick it needs about 1.36 cubic yards or 62 bags of 80 lb mix with 10% waste. Adjust thickness, waste, and price below, or see the 4/5/6 inch breakdown.
10 x 10 x 4 in
1.36 yd³
62 bags at 80 lb
Area
100 sq ft
10 ft x 10 ft
Material cost (4 in)
$204
ready-mix, material only
10x10 by thickness
Concrete for a 10x10 slab at 4, 5, and 6 inches
Thickness drives the volume. Patios and shed pads often use 4 inches; driveways and heavier loads step up to 5 or 6 inches. All figures include the default 10% waste.
| Thickness | Cubic yards | 80 lb bags | 60 lb bags | Ready-mix material |
|---|---|---|---|---|
| 4 in | 1.36 yd³ | 62 | 82 | $204 |
| 5 in | 1.70 yd³ | 77 | 102 | $255 |
| 6 in | 2.04 yd³ | 92 | 123 | $306 |
Want installed cost?
The figures here are material only. For labor, base prep, forms, and finishing, the concrete cost calculator gives a full installed range.
Shopping list
Ready to price and order
Use the calculated quantities as a starting cart, then compare store availability, delivery fees, pallet limits, and local ready-mix minimums before buying.
Large pours
Ready-mix quote check
For high bag counts, compare the bagged route against local ready-mix minimums, delivery, access, and unload time.
Optional base
Gravel base
Base depth is project-specific. Estimate it separately before adding bags or bulk gravel to the order.
Optional forms
Forms and stakes
Plan lumber, stakes, screws, release, and bracing around the perimeter and any step-downs or curves.
Store buttons open retailer search results for now. Confirm exact product yield, pickup, delivery, and pallet rules before ordering.
Formula shown
How the 10x10 estimate works
1. Area is fixed at 100 sq ft
10 ft x 10 ft = 100 sq ft
2. Volume in cubic feet
100 sq ft x (thickness in / 12)
3. Yards, waste, and bags
yd³ = ft³ / 27; bags = ceil(ft³ x (1 + waste) / bag yield)
Watch the edges
A thickened edge, a low subgrade spot, or over-excavation adds concrete fast on a small slab. Bump the waste percentage up if the base is rough, and estimate any beam or haunch separately.
Sources
- Quikrete product yields — bagged concrete mix yield references
- Sakrete bagged concrete references — common bag sizes and concrete mix guidance
- ConcreteNetwork concrete price guide — ready-mix and installed concrete cost context
Reviewed for estimating accuracy
Last updated: June 25, 2026
Estimate only.
This calculator is not a quote. Verify product yield, price, delivery minimums, and local conditions with your supplier or contractor before buying materials.
FAQ
10x10 concrete slab questions
Bags, cubic yards, thickness, cost, and bags-vs-ready-mix for a 10 ft by 10 ft slab.
How much concrete do I need for a 10x10 slab? + -
A 10 ft by 10 ft slab at 4 inches thick needs about 1.36 cubic yards with the default 10% waste. That is roughly 62 bags of 80 lb mix or 82 bags of 60 lb mix. At 5 inches it rises to 1.70 yd³ and at 6 inches to 2.04 yd³.
How many 80 lb bags of concrete for a 10x10 slab? + -
About 62 bags of 80 lb concrete mix for a 4 inch slab with 10% waste, 77 bags at 5 inches, and 92 bags at 6 inches. That many bags is a lot of mixing, so compare against ready-mix delivery.
How many yards of concrete for a 10x10 slab? + -
A 10x10 slab is 100 square feet. At 4 inches that is about 1.36 cubic yards including 10% waste, which rounds up to a small ready-mix order. Most suppliers have a minimum load, so confirm their minimum before ordering.
How much does a 10x10 concrete slab cost? + -
Material alone for a 4 inch 10x10 slab is roughly $204 by ready-mix or $357 in 80 lb bags at typical prices. Installed cost (with labor, base prep, forms, and finishing) is higher and varies by region — use the concrete cost calculator for a full installed range.
Should I use bags or ready-mix for a 10x10 slab? + -
A 4 inch 10x10 slab needs dozens of bags, which is a long day of mixing. Many people order ready-mix for a slab this size for a consistent placement, but compare the bag total, ready-mix minimum, and delivery fee first.