Concrete Sidewalk Cost Calculator
Estimate installed cost for a concrete walkway or sidewalk, and see why narrow pours run higher per square foot than wide slabs.
How this calculator works
This combines material cost (cubic yards of concrete, from the standard slab-volume formula, times your price per cubic yard) with finishing labor (your walkway’s area times a per-square-foot labor rate that runs higher than a patio’s to account for the extra edge-forming narrow pours require).
Formula: Cubic yards = (Length ft × Width ft × Depth ft) ÷ 27. Total cost = (Cubic yards × Price/yd³) + (Area sq ft × Labor rate/sq ft).
Worked example
A 30 ft × 4 ft (120 sq ft) walkway at 4 inches, $150/yd³ material, $7/sq ft labor:
- Depth in feet: 4 ÷ 12 = 0.3333 ft
- Cubic yards: (30 × 4 × 0.3333) ÷ 27 ≈ 1.4815 → 1.48 yd³
- Material cost: 1.4815 × $150 ≈ $222.22
- Labor cost: 120 × $7 = $840.00
- Total estimated cost: $1,062.22
Cost reference (at default rates)
| Walkway size | Estimated total cost |
|---|---|
| 15 ft × 2 ft | ~$266 |
| 30 ft × 4 ft | ~$1,062 |
| 60 ft × 8 ft | ~$4,249 |
How to measure your area
Measure the walkway’s full run length and its width in feet. If the path curves or changes width, break it into straight segments, calculate each, and add the totals — walkways rarely run as a single clean rectangle end to end.
Frequently asked questions
Why is the labor rate higher here than for a patio or driveway?
This defaults to $7/sq ft versus $6/sq ft for a patio or driveway, because narrow walkway pours carry the same per-foot forming and edging labor as a wide slab but spread it over far less area — a 4-ft-wide walk needs almost as much edge-forming per linear foot as a 12-ft-wide one.
What width should a sidewalk be?
4 ft is a common residential standard and this calculator's default, wide enough for two people to pass. Public/ADA-accessible walkways typically require at least 4-5 ft clear width — check local code if the sidewalk is publicly accessible.
Does this include expansion joints?
No — this is material plus finishing labor only. Contraction/control joints (typically cut every 4-6 ft along the walk) and any expansion joint material where the walk meets a driveway or slab are a separate line item.
What's excluded from this estimate?
Excavation, a gravel sub-base, forms, and any removal of an existing walkway aren't included. For a full tear-out-and-replace job, add demolition and haul-off costs separately.
Should sidewalk concrete be thicker than a patio?
4 inches is standard for pedestrian-only walkways, matching the patio default. If the walkway will ever see occasional vehicle crossing (like a driveway apron section), increase the depth to 5-6 inches for that portion.
Estimates only. Verify quantities with your supplier before purchasing.