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Concrete Driveway Calculator

Estimate concrete and gravel base volume for a new driveway, in cubic yards.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-25 · v1.0.0

Market
Imperial · sales tax
39.37 ft9.84 ft0.41 ft
Schematic, drawn to the proportions you entered — not to scale on screen.

Estimated concrete driveway needed

5.89 cubic yards (concrete)

High confidence
Driveway area
387.5 ft²
Gravel base needed
4.71 cubic yards

At the values currently entered, the result works out to 5.89 cubic yards (concrete). Figures are shown for United States, where IRC 2024 is the governing residential reference; switch the market above if you are building elsewhere.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Residential driveways commonly use a 4-6 in concrete slab over a 4-6 in compacted gravel base for drainage and stability
  • Volume formula: length x width x depth / 27 = cubic yards

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Frequently asked questions

Do I really need a gravel base?
In most climates and soil types, yes — it improves drainage and reduces the chance of cracking from frost heave or soil movement. Sandy, well-draining soil in mild climates sometimes skips it; check local practice.
How thick should a driveway be for larger vehicles like RVs?
Consider 5-6 in (~0.13-0.15 m) or more for driveways that will regularly carry RVs, trucks, or other heavy vehicles, versus 4 in (~0.1 m) for standard passenger cars.
Does this include rebar or wire mesh reinforcement?
No — reinforcement is calculated separately. See the Rebar Calculator for a general grid-spacing estimate.