Project planner
Patio Project Planner
Enter the patio size once. Get a combined estimate for the concrete slab and the compacted gravel base underneath — with waste you control and a simple shopping list. This is a planning aid, not an engineering plan or a substitute for local code.
Patio length
ftin
Patio width
ftin
Your results
Enter patio length and width to build a combined concrete + gravel shopping list.
Next useful steps
Concrete Slab Calculator
Refine slab yards and bag count alone.
OpenGravel Calculator
Adjust density or depth for the base layer.
OpenConcrete Bag Calculator
Enter the exact yield from your bag label.
OpenConcrete patio guide
Prep, pour and finish steps in plain English.
OpenSquare Footage Calculator
Measure irregular shapes first.
OpenSaved estimates
Reopen lists you stored on this device.
Open