Measure the pour area
Use finished dimensions for length and width. For irregular areas, split the project into smaller rectangles.
Concrete calculator
Sidewalk Concrete Calculator
Estimate concrete for sidewalks, walkways, and narrow flatwork pours.
Estimated concrete needed1.09 yd³ with 10% waste
- Cubic feet
- 26.67 ft³
- Cubic meters
- 0.76 m³
- 80 lb bags
- 45
- 60 lb bags
- 60
- 40 lb bags
- 89
How to use it
Enter slab thickness
Most patios and walkways use 4 inches. Driveways and load-bearing work may need more.
Order with waste
Use the 10% waste recommendation to cover spillage, uneven subgrade, and small measurement errors.
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FAQ
Concrete estimating questions
How thick is a concrete sidewalk?
A common sidewalk thickness is 4 inches, though vehicle crossings and local rules may require thicker concrete.
How do I calculate a long walkway?
Enter total length and average width, or split curved sections into straight segments and add the results.
Do sidewalks need gravel base?
Most sidewalks perform better with a compacted base, especially where drainage or frost movement is a concern.