Concrete Patio Calculator

Concrete Patio Planning Guide

A poured concrete patio is one of the most durable outdoor surfaces you can build — properly installed, it lasts 25–30 years with minimal maintenance. The key variables are size, thickness, and whether you need a gravel base (you do).

Thickness by Use

• Light foot traffic (small patio, walkway connection) — 3.5 to 4 inches
• Standard residential patio — 4 inches with wire mesh reinforcement
• Heavy use (hot tub pad, outdoor kitchen) — 5 to 6 inches with rebar
• Patio with vehicle access — 6 inches with rebar, engineered base

Every concrete patio needs a compacted gravel base beneath it — typically 4 inches of crushed stone. This prevents frost heave, provides drainage, and gives the concrete a stable, level surface to cure on. Use the Gravel Calculator to estimate the base material separately.

The Bottom Line

Free concrete patio calculator. Cubic yards, bags, and cost for poured concrete patios of any size and shape. Accurate measurements prevent over-ordering and under-ordering — both cost you money and time. Enter your project dimensions above, add 10% for waste, and order with confidence.