Paver Calculator
1. Project Area
2. Paver Size
3. Materials & Waste
Includes 1" sand bedding standard
Planning a new patio, driveway, or garden walkway? Our Paver Calculator takes the guesswork out of material ordering. Get precise estimates for the number of pavers, cubic yards of base gravel, and bedding sand required for any project size.
Pro Tip: Always order 10% more pavers than your calculated net area to account for cuts, breaks, and future repairs.
- Calculates pavers, sand, and gravel in one go
- Adjustable base depth for different soil types
- Standard 1" bedding sand calculation included
Understanding Paver Projects
A successful paver installation is built from the bottom up. While the pavers are what you see, the foundation—consisting of sub-base gravel and bedding sand—is what ensures your patio stays level for decades. This calculator helps you determine the volume for all three critical layers based on your specific project dimensions.
Whether you're using classic brick pavers, large concrete slabs, or natural stone, the mathematical principles remain the same. By inputting your area dimensions and the size of your chosen paver, you can accurately estimate material costs and logistics, like how many trips to the landscaping supply yard you'll need.
How to Calculate Paver Needs
To get the most accurate results, follow this systematic approach to measuring your project area:
- Measure Your Area: Find the total length and width of your project. If your area is irregular, divide it into smaller rectangles and add their results together.
- Measure One Paver: Note the length and width of the paver you intend to buy (common sizes include 4"x8", 6"x6", and 12"x12").
- Determine Base Depth: For foot traffic (walkways), 4 inches of gravel is standard. For driveways or areas with poor drainage, increase this to 6 or 8 inches.
- Add Waste: A 10% waste factor is recommended for simple patterns. For complex designs like herringbone or circular patterns, increase waste to 15-20%.
The Math Behind the Paver Calculator
Our calculator uses several specific formulas to provide a comprehensive material list:
Paver Count Formula
Total Area / Paver Area × (1 + Waste Factor)
Base Gravel (Cubic Yards)
(Total Area × Depth in Feet) / 27
Bedding Sand (Cubic Yards)
(Total Area × 0.0833) / 27
*0.0833 is 1 inch converted to feet.
The Three Layers of a Paver Patio
Understanding what goes into your patio helps you appreciate why precise calculations are necessary:
- 1. Sub-Base (Gravel): Typically 3/4" minus crushed stone. This layer provides structural integrity and drainage. It must be compacted in 2-inch lifts.
- 2. Bedding Layer (Sand): Coarse concrete sand is best. This 1-inch layer allows you to seat the pavers and accommodate minor variations in paver thickness.
- 3. Surface Layer (Pavers): The visible aesthetic layer. Paver joints are later filled with polymeric sand to lock them in place and prevent weed growth.
Frequently Asked Questions
Can I skip the sand layer?
No. The bedding sand is critical for creating a perfectly level surface and for allowing the pavers to "settle" into the base during final compaction. Skipping it leads to uneven pavers and potential cracking.
What is the best gravel for the base?
A 3/4" crushed stone with fines (often called 3/4" minus, Road Base, or CR-6) is standard. The "fines" (dust) allow the gravel to compact into a solid, rock-like surface that won't shift.
How do I calculate for circular patios?
For a circle, calculate the area using πr² (3.14 x radius x radius). Once you have the square footage, you can use this calculator as normal. Just increase your waste factor to 20% due to the high amount of cutting required.
Project Estimation Examples
Standard Walkway
3ft wide x 20ft long path using 4x8 bricks.
- Area: 60 sq ft
- Pavers (10% waste): 300 units
- Gravel (4" base): 0.75 yd³
Estimate for 3 tons of material total.
Large Dining Patio
15ft x 15ft patio using 12x12 stone slabs.
- Area: 225 sq ft
- Pavers (10% waste): 248 units
- Gravel (6" base): 4.2 yd³
Requires heavy delivery or large trailer.