Pavement Calculator – Concrete, Asphalt, Pavers & Gravel
Plan your patio, pathway, or driveway with confidence. Enter your dimensions, pick a pavement type, set thicknesses for the surface and base, and apply a waste factor. The tool returns volumes for surface and base layers (in both metric and imperial), and for pavers it also estimates the number of pieces needed.
What It Calculates
- Total area
- Surface layer volume (e.g., concrete or asphalt)
- Base/sub-base volume (e.g., compacted road base or gravel)
- Paver count (when “Pavers” is selected), based on size + joint gap
Recommended Thickness (General Guides)
- Patios/paths: Surface 2–4 in; base 4–6 in
- Driveways: Surface 4–6 in; base 6–8+ in
- Pavers: Paver 2–2.5 in; bedding sand ~1 in; base 4–8 in+
Related Tools
Planning foundations or base layers? These will help: Concrete Slab Calculator and Gravel Calculator.
FAQs
Do I need a base layer?
Yes—base layers improve drainage and reduce settlement. Thicker bases are recommended for driveways and poor soil.
How much waste should I add?
10% is common for cutting and irregular edges; use 5% for simple rectangles and 15% for complex shapes.
Can I switch units?
Absolutely—toggle between imperial and metric. Labels will update to the correct units.
Important Estimate Disclaimer
The results provided by this calculator are intended as general estimates only and should not be considered precise engineering measurements. Actual material requirements, costs, and quantities can vary significantly based on site conditions, local building codes, soil type, reinforcement requirements, climate exposure, and the intended use of your project.
These calculators are designed to help you plan and budget your project more effectively, but they do not replace professional advice from a qualified contractor, engineer, or building inspector. Always verify your calculations and assumptions with trained professionals before placing material orders or commencing construction.
For more information on the assumptions, formulas, and data used in these tools, see our Data Sources and Methodology pages.
Material estimates, cost figures, and volume calculations are approximate and may not reflect your actual requirements. Always double-check dimensions and project-specific needs, and consider adding a contingency allowance for waste, over-excavation, and unforeseen conditions.
If you are unsure about any aspect of your project — including structural requirements, reinforcement needs, drainage, or load-bearing capacity — consult with a licensed professional before proceeding.