Driveways · Area
Driveway Area Calculator: Square Footage for Concrete, Sealing & Resurfacing
Measure your driveway in square feet and square metres for any shape — rectangle, round, or L-shape. Then hand the dimensions off to the concrete calculator to get the volume.
Here's the deal
Area is the input every other downstream estimate (concrete volume, sealer coverage, resurface quote) starts from. This is the measurement tool, not the material-ordering tool — there's no waste percentage and no cost here, because waste applies to ordered volume, not to the area itself. Measure once.
Useful for:
Before you start · Step 1
What to measure
Pick the shape that matches your driveway, then take the measurements the diagram shows. Most driveways are a clean rectangle; round shapes show up at turnarounds; an L-shape is common when a driveway has a parking bay or branches around the side of a house.
The calculator returns the area in square feet and square metresat once — there's no need to convert by hand for a contractor or supplier in either unit.
Step 2 · The tool
Driveway area calculator
L × W — the standard driveway shape.
Enter your measurements,
then hit Calculate
Your full breakdown — yards, tons, bags, loads and cost — appears here.
Geometry only — there's no waste, material, or cost on this tool by design. Add a slab thickness and read the concrete volume via the handoff below.
The method
How the area math works
Each shape is exact geometry, no fudge factor:
- Rectangle: area = length × width.
- Round: area = π × (diameter ÷ 2)².
- L-shape: area = length₁ × width₁ + length₂ × width₂ — the two summed rectangles. See the next section.
Conversion to metric uses the engine's exact constant 1 ft = 0.3048 m, so 1 sq ft = 0.09290304 m² — no rounding error on the m² side.
The non-rectangle case
L-shape: two rectangles summed
An L-shaped driveway — a main run with a parking bay or a branch wrapped around the corner of a house — is just two rectangles meeting at an inside corner. Measure the length and width of each rectangle once, and the calculator adds the areas. There's no trick: an L is exactly its two summed rects.
The interlock
Get the concrete volume for this area
Area is the input to volume: multiply by the slab thickness in feet and you have cubic feet, which the concrete calculator converts to cubic yards and bags. The handoff button in the result panel opens the concrete calculator with your driveway dimensions prefilled — you add a thickness there and read the volume.
Installed cost (concrete + labor + fees) is a separate calc: today, use the existing slab cost calculator with your driveway dimensions. A dedicated Driveway Cost Calculator with driveway-specific fee defaults lives downstream of this turn.
Questions
Driveway-area FAQ
How do I measure the square footage of my driveway?
How many square feet is a typical two-car driveway?
How do I get the concrete volume from the area?
Does an L-shaped driveway just add the two rectangles?
Do I add waste to the area?
Receipts
Sources & methodology
Pinned sources
- Angi · Bovees · Landscaping Network · Concrete Network · ergeon — Driveway sizing ladder — context for the default inputs · 2026Single-car driveway 10–12 ft (3–3.7 m) wide; two-car 20–24 ft (6–7.3 m); three-car ~27–36 ft (8.2–11 m, sources vary at the wide end); length ~18–20 ft (5.5–6 m) per vehicle, more for full-size or extended-cab trucks; ~2 ft (0.6 m) clearance to wall or fence for door swing. Local code and HOA rules can govern widths and the street opening. Reused verbatim from the concrete-driveway pillar — context for default inputs only, not a new claim.
- Exact geometry — Area math is computed, not sourced · 2026Area = L × W for a rectangle; π × (D/2)² for a circle; the sum of two rectangles for an L-shape. Unit conversion uses the engine's exact constant FT_PER_M = 0.3048, so 1 sq ft = 0.09290304 m². The driveway-area.config.test.ts suite verifies three spot cases: 20×40 ft = 800 sq ft / 74.3 m², Ø22 ft = 380.13 sq ft / 35.31 m², and a 20×30 + 10×12 L-shape = 720 sq ft / 66.9 m².
Area math is exact geometry, not sourced; conversions use the engine's exact 1 ft = 0.3048 m constant. The sizing-ladder context (single/two/three-car widths, length per vehicle, clearance) is reused verbatim from the concrete-driveway pillar — Angi, Bovees, Landscaping Network, Concrete Network, and ergeon consensus — not re-sourced here. Local building code and any HOA rules can govern widths, the street opening, and permits.