Concrete Sidewalk Cost Calculator
A concrete sidewalk cost calculator adds yd³ × concrete price to sq ft × labor: a 30 × 4 ft walk at 4 in is 1.48 yd³, or $1,062 at $150/yd³ and $7/sq ft.
Concrete sidewalk cost calculator: material plus finishing labor
This concrete sidewalk cost calculator prices a straight walk in two parts. The formula is total = (cubic yards × price per yd³) + (length × width × labor rate), where cubic yards = length × width × (depth ÷ 12) ÷ 27. The quantity line shows cubic yards of concrete; the cost line shows concrete plus labor. Both rates are editable, so you can drop in local quotes.
How each part is priced
Concrete. A 4 inch walk is one-third of a foot thick. Every 81 sq ft of walk needs 1 cubic yard, because 81 × 0.333 = 27 cu ft. The calculator multiplies that volume by your ready-mix price, which defaults to $150 per yard.
Labor. Walks are priced per square foot. The default $7 rate stands for forming, placing, edging, jointing, and a broom finish. It sits $1 higher than the site’s patio default because a narrow walk has much more edge per square foot.
No waste factor is added. Order a little more concrete than the result, since a base that dips by half an inch adds about 12% to a 4 inch walk.
Worked examples
- Default front walk: 30 × 4 ft, 4 in thick
- Area: 30 × 4 = 120 sq ft
- Volume: 120 × 0.333 = 40 cu ft ÷ 27 = 1.48 yd³
- Concrete: 1.4815 × $150 = $222.22
- Labor: 120 × $7 = $840.00
- Total: $1,062.22, or about $8.85 per sq ft
- Wider path to a back gate: 50 × 5 ft, 4 in thick
- Area: 50 × 5 = 250 sq ft
- Volume: 250 × 0.333 = 83.3 cu ft ÷ 27 = 3.09 yd³
- Concrete: 3.086 × $150 = $462.96
- Labor: 250 × $7 = $1,750.00
- Total: $2,212.96
Labor is roughly four-fifths of both totals. A cheaper concrete quote moves the total far less than a cheaper finishing rate.
Sidewalk cost reference at default rates
| Walk size (4 in thick) | Area | Concrete | Total |
|---|---|---|---|
| 15 × 2 ft stepping path | 30 sq ft | 0.37 yd³ | $266 |
| 30 × 4 ft front walk | 120 sq ft | 1.48 yd³ | $1,062 |
| 50 × 5 ft side path | 250 sq ft | 3.09 yd³ | $2,213 |
| 60 × 8 ft wide walk | 480 sq ft | 5.93 yd³ | $4,249 |
Many ready-mix plants charge extra for loads under a few yards. On a small walk, that fee can rival the concrete cost, so ask before you compare bids.
How to measure a sidewalk
- Length: measure along the centerline from the step or slab edge to the end of the walk.
- Width: measure the finished width, not the trench. Forms sit outside the concrete.
- Curves and bends: break the walk into straight runs, price each, and add them. Use the average width on flared sections.
- Landings: a wider pad at a door is its own rectangle.
- Depth: use the finished concrete thickness, not including gravel below.
Getting comparable bids
Ask each contractor to quote the same width, length, thickness, base depth, and finish. A bid that includes 4 inches of compacted gravel and wire mesh will look higher than one that pours on bare soil, but it is a different walk.
Ask how joints will be made and spaced, how the walk will slope for drainage, and how the edges will be finished. Confirm who removes the old walk and where the debris goes. With those items written down, you can enter each bid’s concrete and labor rates here and compare the totals on equal terms.
Common sidewalk budgeting mistakes
- Forgetting removal. Breaking out an old walk and hauling it away is a separate job.
- Using one depth for the whole run. The section where cars cross needs to be thicker.
- Leaving out slope. Walks are usually pitched slightly so water runs off the side. That is set in the forms, not the concrete volume.
- Pricing decorative work at a plain rate. Stamped or colored finishes cost more per square foot. Use the stamped concrete cost calculator.
- Skipping base prep in soft soil. A walk on soft clay will heave and crack.
To get bag or yard counts without costs, use the concrete sidewalk calculator. For a square slab at the end of the walk, try the concrete pad cost calculator.
Frequently asked questions
Why is the labor rate higher here than for a patio or driveway?
The default is $7 per sq ft here versus $6 on the patio and driveway cost calculators. A narrow walk has two long form edges for very little area: a 30 × 4 ft walk has 68 ft of perimeter for 120 sq ft, while a 12 × 10 ft patio has 44 ft for the same 120 sq ft. Forming and edging are paid per foot, so walks cost more per square foot.
What width should a sidewalk be?
Residential front walks are often 3 to 4 ft wide, and 4 ft is this calculator's default. Walks that must meet accessibility rules, or public sidewalks, have their own minimum widths set by local code and the agency that owns the right-of-way, so check local code before you pour.
Does this include control and expansion joints?
Not as a separate line. Control joints tooled or saw-cut across the walk, often spaced roughly as far apart as the walk is wide, and isolation material where the walk meets a slab or foundation are part of finishing. Ask whether your contractor's per-square-foot rate includes them.
What's excluded from this estimate?
Tearing out an old walk, hauling debris, excavation, a gravel base, forms, rebar or mesh, and permits are not in the formula. For a remove-and-replace job, add demolition and disposal as a separate amount.
Should sidewalk concrete be thicker than a patio?
A 4 inch walk is the common choice for foot traffic only, the same as most patios. Where a walk crosses a driveway or might carry a vehicle, 5 to 6 inches is common for that section. Enter that section separately with the greater depth.
Estimates only. Verify quantities with your supplier before purchasing.