Know exactly how much to buy before you dig.
Free calculators for pavers, gravel, stone, concrete, retaining walls and mulch. Enter your size, get cubic yards, tons, bags and pieces in seconds.
Quick gravel estimate
Assumes crushed stone at 2,800 lb/yd³.
Most used calculators
The tools homeowners and contractors open most.
Gravel Calculator
Cubic yards, tons & bags for any area.
Paver Calculator
Pavers, base & sand for a patio.
Concrete Calculator
Yards or 60/80 lb bags for a slab.
Retaining Wall Blocks
Blocks, caps & drainage stone.
River Rock Calculator
Coverage by rock size and depth.
Mulch Calculator
Yards or 2 cu ft bags for beds.
Flagstone Calculator
Tons of flagstone for a path or patio.
Yards to Tons
Convert any material by density.
Browse by project
Every calculator is grouped by the job you’re planning.
Paver counts, base gravel, bedding sand and polymeric sand for patios and walkways.
Gravel, crushed stone, pea gravel, river rock and flagstone by yard, ton and bag.
Slabs, bags, footings, post holes and rebar for small concrete jobs.
Retaining wall blocks, caps, base stone and landscape edging.
Mulch, topsoil, sand and raised-bed soil for gardens and lawns.
Cubic yards to tons, square feet to yards and bags per yard.
How our estimates work
Measure the area
Length, width and depth — or circles and triangles with the shape options.
Pick the material
Each material uses its real density (lb per cubic yard) from supplier and industry data.
Get what to order
Cubic yards, tons, bag counts and pieces — with a waste allowance so you don’t run short.