Concrete Slab Cost
Estimate concrete volume and cost for a slab pour.
About Concrete Slab Cost
The slab volume in cubic feet converts to cubic yards for delivery, and to 80-pound bags for a mix-yourself job. Ready-mix is priced per cubic yard with a minimum charge, so the volume decides whether to order a truck or haul bags.
Formula
Concrete Slab Cost
Volume = length x width x thickness / 12; yards = feet / 27
- 0.6
- Cubic feet one 80-lb bag of mix produces
Worked example
With the default values below, Concrete Slab Cost returns Volume of 26.67. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Slab lengthminimum 0 ft
- 10 ft
- Slab widthminimum 0 ft
- 8 ft
- Slab thicknessminimum 1 in
- 4 in
- Concrete priceminimum 0
- 150
- Other costsminimum 0
- 0
Results
- Volume
- 26.67 cu ft
- Volume
- 0.99 cu yd
- 80-lb Bags
- 45
- Total Cost
- $148.15
Step by step
- 1Values used
- 2Concrete Slab Cost
- 3Volume= 26.67 cu ft
- 4Volume= 0.99 cu yd
- 580-lb Bags= 45
- 6Total Cost= 148.15
Assumptions and limits
- The result is derived only from the 5 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Concrete Slab Cost calculated?
Volume = length x width x thickness / 12; yards = feet / 27 The slab volume in cubic feet converts to cubic yards for delivery, and to 80-pound bags for a mix-yourself job.
Why does Concrete Slab Cost matter?
Ready-mix is priced per cubic yard with a minimum charge, so the volume decides whether to order a truck or haul bags.
What values do I need to enter?
This calculator takes 5 inputs: Slab length, Slab width, Slab thickness, Concrete price, Other costs. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.