Concrete · Quick answer

How many 60 lb bags of concrete are in a cubic yard?

One cubic yard takes 60 bags of 60 lb concrete mix, or 66 bags with 10% waste. A 60 lb bag of QUIKRETE Concrete Mix yields about 0.45 cu ft: 27 ÷ 0.45 = 60.

60 lb bags for partial yards

Concrete neededBags, no wasteBags with 10%
¼ cu yd (6.75 cu ft)1517
½ cu yd3033
¾ cu yd4550
1 cu yd6066
1½ cu yd9099
2 cu yd120132

Round post holes

Full cylinder, no post deducted, as in the bag calculator's post-hole mode.

HoleVolume (cu ft)60 lb bags
10 in wide × 24 in deep1.093
10 in × 30 in1.364
10 in × 36 in1.644
12 in × 36 in2.366

How we worked it out

  • Bags = cubic feet ÷ 0.45, rounded up.
  • Sixty 60 lb bags weigh 3,600 lb, the same as forty-five 80 lb bags, because both sizes yield 133 lb per cubic foot.
  • A QUIKRETE pallet of 60 lb bags holds 56 bags (25.2 cu ft).

Questions

How many 60 lb bags of concrete for a 10x10 slab?

At 4 in deep: 75 bags before waste (33.33 cu ft ÷ 0.45 = 74.1, rounded up), or 82 with 10% waste.

How many 60 lb bags of concrete in a cubic yard?

60 bags before waste.

Sources

QUIKRETE Concrete Mix yields; other products differ — check your bag.

Values marked with a link come from the linked source, which opens in a new tab. Unit conversions and our own defaults are listed separately. Every value the site uses is in the methodology source register.

Where the numbers come from 6

80 lb concrete bag yield
0.6 cu ft/bag
QUIKRETE Concrete Mix No. 1101 data sheet (revised October 2022) (opens in a new tab)quikrete.com · PDF
Accessed
60 lb concrete bag yield
0.45 cu ft/bag
QUIKRETE Concrete Mix No. 1101 data sheet (revised October 2022) (opens in a new tab)quikrete.com · PDF
Accessed
50 lb concrete bag yield
0.375 cu ft/bag
QUIKRETE Concrete Mix No. 1101 data sheet (revised October 2022) (opens in a new tab)quikrete.com · PDF
Accessed
40 lb concrete bag yield
0.3 cu ft/bag
QUIKRETE Concrete Mix No. 1101 data sheet (revised October 2022) (opens in a new tab)quikrete.com · PDF
Accessed
90 lb concrete bag yield
0.675 cu ft/bag
QUIKRETE Concrete Mix No. 1101 data sheet (revised October 2022) (opens in a new tab)quikrete.com · PDF
Accessed
60 lb Concrete Mix bags per pallet
56 bags/pallet
QUIKRETE Concrete Mix retail page (Lowe's), product 1101: "56 per pallet (SKU #10387)" (opens in a new tab)quikrete.com
Accessed · Source and value supplied in the owner brief
Unit conversions and our defaults5
Cubic feet per cubic yard
27 cu ft/cu yd
Geometry: 3 × 3 × 3 feet
Inches per foot
12 in/ft
Unit definition: one foot contains twelve inches
Circle constant π
≈ 3.14159 unitless
Circle geometry, as specified in the owner brief
Cubic inches per cubic foot
1728 cu in/cu ft
Geometry: 12 × 12 × 12 inches
Bag concrete waste default
10 %
Owner planning default; editable
By , DAE in Civil Engineering, three years as a site supervisor.Last updated How we calculate