Paver Base Calculator
Find how much gravel base and bedding sand a paver patio, walk or driveway needs, in cubic yards and tons.
Change the values and press Calculate to work out your own figures.
From length and width
Enter the length and width.
Show the working
- gravel = area × depth × 1.2
- sand = area × depth
From an area
Enter the area.
Show the working
- gravel = area × depth × 1.2
- sand = area × depth
How to use it
Enter the length and width. Enter the area.
Lengths can be decimals, fractions or tape entries such as 12' 6 1/2" (in feet or inches). Prices are optional.
Key facts
gravel = area × depth × (1 + compaction %) ÷ 27 (cu yd) sand = area × depth ÷ 27
Depths
Patios and walks: 4–6 in of compacted gravel; driveways: 6–8 in (more on clay). Always 1 in of bedding sand.
Questions
How much base for a 700 sq ft patio?
10.37 cubic yards of gravel at 4 in (with 20% for compaction) and 2.16 of sand at 1 in.
Formulas
gravel = area × depth × (1 + compaction %) ÷ 27 (cu yd) sand = area × depth ÷ 27
Sources
Limitations
- Material densities are typical values (the midpoint of the commonly published range); real loads vary with moisture, grading and compaction, so check with your supplier or type in their density.
- Tank results are the geometric volume; real tanks have wall thickness and fittings.