Concrete Driveway Calculator
Calculate concrete volume and cost for your driveway.
Concrete Volume by Driveway Size
4" thickness, 10% waste factor included
| Driveway Size | Area (sq ft) | Cu Yards | Trucks | Est. Cost @$150/yd |
|---|---|---|---|---|
| 10x20 (1-car) | 200 | 2.7 | 1 (short) | $405 |
| 12x30 (1-car long) | 360 | 4.9 | 1 | $735 |
| 12x40 (1-car) | 480 | 6.5 | 1 | $975 |
| 20x30 (2-car) | 600 | 8.1 | 1 | $1,215 |
| 20x40 (2-car) | 800 | 10.8 | 1-2 | $1,620 |
| 24x50 (wide 2-car) | 1200 | 16.3 | 2 | $2,445 |
How We Calculate This
This concrete driveway calculator uses established formulas and industry-standard data to provide accurate estimates.
- Enter your specific values into the calculator fields above
- Our algorithm applies the relevant formulas using your inputs
- Results are calculated instantly in your browser — nothing is sent to a server
- Review the detailed breakdown to understand how each factor affects your result
These calculations are estimates based on standard formulas. For critical decisions, always consult a qualified professional.
How to Convert Oven Recipes to Air Fryer
This calculator computes concrete volume for a driveway slab, then estimates ready-mix truck loads, reinforcement needs, and total material cost.
The basic rule:
- Volume (cu ft) = length x width x thickness (in feet)
- Volume (cu yd) = cu ft / 27
- A standard ready-mix truck carries 8-10 cubic yards
- Short load fee typically applies for orders under 5 cubic yards
- Rebar (#4 at 18" OC): linear feet = 2 x (length/1.5 + width/1.5) x length or width
- Wire mesh: area in sq ft / 25 (each 5x10 sheet covers 50 sq ft, with overlap)
Standard residential driveway concrete is 4,000 PSI with a 4-5" slump. Order 10% extra to account for uneven subgrade and forms. Pour should be done in one session — avoid cold joints. Minimum cure time is 7 days (keep moist or use curing compound).
When Would You Use This Calculator?
This concrete driveway calculator is designed for anyone who needs quick, reliable estimates without complex spreadsheets or professional consultations.
- When you need a quick estimate before committing to a purchase or project
- When comparing different options or scenarios side by side
- When planning a budget and need to understand potential costs
- When you want to verify a quote or estimate you've received from a professional
- When teaching or learning about the concepts behind these calculations
Frequently Asked Questions
How thick should a concrete driveway be?
Standard residential driveway: 4" minimum. For heavier vehicles (trucks, RVs, boats): 5-6". Commercial or heavy equipment: 6-8". Thicken edges to 6" for the last 12" around the perimeter. The subbase (compacted gravel) should be 4-6" thick.
How much does a concrete driveway cost?
Concrete material: $130-$180 per cubic yard delivered. Total installed cost: $8-$15 per sq ft for plain concrete, $12-$20 for stamped or colored. A 40x12 ft driveway (480 sq ft, 4" thick): about $600-$900 for concrete alone, $4,000-$7,000 total installed.
Do I need rebar in a concrete driveway?
Rebar is recommended for all driveways. #4 rebar at 18" on center both ways is standard. Alternative: 6x6 welded wire mesh (WWF). Fiber mesh alone is not sufficient for driveways — it controls surface cracking but doesn't provide structural reinforcement.
How many cubic yards for a 2-car driveway?
A typical 2-car driveway (20x40 ft, 4" thick) = 800 sq ft x 0.33 ft = 264 cu ft = 9.8 cu yd. With 10% waste: about 10.8 cu yd, or one full truck load. At $150/yd, that is about $1,620 for concrete material.
How long before I can drive on new concrete?
Light foot traffic: 24-48 hours. Light vehicles (cars): 7 days minimum. Heavy vehicles (trucks, RVs): 14-28 days. Full strength (28-day cure) before applying sealant. Avoid deicing salts for the first winter. Hot weather accelerates curing; cold weather slows it.
What PSI concrete for a driveway?
Use 4,000 PSI concrete for residential driveways (this is standard). 3,000 PSI is below code for most jurisdictions. 4,500-5,000 PSI for freeze-thaw areas or commercial use. Specify air-entrained concrete (5-7%) in climates with freezing temperatures.