Stone calculators

Stone and aggregate quantities

Area × depth in, tons and cubic yards out — with the density that matches the product you ordered.

• Crushed StoneTonnage, coverage and cost for driveways, drainage layers and paver base.
• Pea GravelTonnage, coverage and cost for pathways, patios, playgrounds and dog runs.
• River RockTonnage, coverage and cost for dry creek beds, borders and decorative ground cover.
• Crushed LimestoneTonnage, coverage and cost for driveways, farm lanes and compacted base.
• Decomposed GraniteTonnage, coverage and cost for pathways, patios and xeriscape surfaces.
• Paver BaseTonnage, coverage and cost for the compacted layer under pavers and slabs.
• Bedding SandTonnage, coverage and cost for the screeded setting bed under pavers.
• Drainage StoneTonnage, coverage and cost for French drains, wall backfill and dry wells.
• Stone dustStone dust is screenings left over from crushing. Enter your area and screed depth to get tons, cubic yards and a delivered cost range.
• Crusher dustCrusher dust compacts to a hard, almost sealed surface. Enter the area and depth for tonnage, volume and cost, in both imperial and metric.
• Stone backfillBackfill stone is the clean drainage rock behind a wall or around a pipe. Enter the backfill zone dimensions to get tonnage and delivered cost.
• French drain stoneSize the trench, get the stone. Enter the trench footprint as your area (length × width) and the stone depth to plan a French drain.
• Decorative stoneDecorative stone goes down shallow — 2 inches on beds, 3 on high-traffic areas. Enter the bed area for tonnage, bag counts and cost.
• Landscape stoneOne tool for every landscape rock job: beds, borders, paths and dry creek beds. Enter area and depth for tonnage and cost.
• Driveway stoneA gravel driveway is three layers, not one. Enter your driveway footprint and the depth of the layer you are pricing.
• 2A modified stone2A modified is the Pennsylvania spec base stone — crushed rock with fines that compacts to a hard, sealed sub-base. Enter area and compacted depth.
• Limestone baseCrushed limestone base compacts tight and cements slightly over time. Enter your area and compacted depth for tonnage and cost.
• Stone baseBase stone is what everything else sits on. Enter the finished area and the compacted base depth — the tool adds the compaction allowance.
• Stone fillFilling a low spot, a washout or a crawl space? Enter the footprint and the average fill depth for tonnage and truckloads.
• Crushed concreteRecycled concrete is the cheapest structural aggregate on most price lists. Enter your area and compacted depth for tonnage and cost.
• Gravel coverageCoverage runs backwards from tonnage: one ton spread thin covers a lot, spread deep covers very little. Enter area and depth to see both.
• Dirt / topsoilDirt is sold by the cubic yard, delivered by weight and settles once placed. Enter the area and depth for both numbers.
• Rubber mulchRubber mulch is sold by weight, not volume, and playground depths are set by fall height. Enter the area and depth for bags and pounds.
• Wood fiber mulchEngineered wood fiber is the standard accessible playground surface. Enter the area and depth for cubic yards, bags and truckloads.

Walls, patios and specialty stone

Veneer, masonry, dry-stack, patios, fire pits, gabions and the mortar, fabric and edging around them.

• Stone veneerVeneer is ordered in two products: flats by the square foot and corners by the linear foot. This splits them and adds the mortar.
• Stone masonryFor solid stone walls rather than veneer. Enter the wall dimensions to get tonnage, mortar and a cost range.
• Stone wall mortarEnter the wall face area and joint style to get mortar bags, sand tonnage and the right mix type.
• Stacked stone wallDry-stacked walls are built without mortar and need more stone than they look. Enter the wall dimensions for tonnage and cost.
• Stepping stonesStepping stone spacing is set by human stride, not aesthetics. Enter your path length to get the count that walks comfortably.
• CobblestoneCobbles are ordered by the piece or the pallet. Enter your area and cobble size for counts, base material and cost.
• Stone patioEverything a stone patio needs, in one pass — surface, base, bedding, joints, edge restraint and the excavated spoil to haul away.
• Fire pit stoneEnter the finished diameter and block size to get blocks per course, total blocks, base gravel and liner requirements.
• Gabion stoneGabion fill is priced by the ton and placed by the basket. Enter your basket dimensions and wall size for tonnage.
• Stone cuttingHow many cuts, how long they take and how many blades you burn through. Enter the piece count and cut length.
• Landscape fabricFabric is sold in fixed roll widths and always needs overlap. Enter the area and roll size for rolls and staples.
• Landscape edgingMeasure the perimeter, get the sections and stakes. Works for steel, aluminium, poly, paver and natural stone edging.

Stone weight and unit conversions

Slab and boulder weights, tonnage conversions, cubic metres, and the imperial stone unit.

• Stone weightEnter the dimensions and stone type to get weight in pounds, kilograms and tons — plus whether it is a two-person lift or a machine job.
• Granite weightGranite runs about 165 lb per cubic foot. Enter the area and thickness to see total weight, weight per square foot and how many people it takes.
• Stone slab weightFeet and inches in, pounds and kilograms out — for any slab material and thickness.
• Flagstone weightFlagstone is sold by the ton with coverage that depends entirely on thickness. Enter your patio area and stone thickness.
• Marble slabSlabs are sold whole, not by the square foot you use. This applies a realistic yield factor so you buy the right number.
• Stone tonnageQuarries sell by the ton but you measure in feet. This converts the two, using the density of the material you actually ordered.
• Stone square footageEvery stone estimate starts with area. Measure rectangles, circles and triangles, add waste, and see what it converts to in pallets and tons.
• Stone cubic feetVolume first, everything else after. Enter the three dimensions and read every unit a supplier might quote.
• Stone by the yardLandscape suppliers sell by the cubic yard. This tells you how many yards your job takes and how far each one goes.
• Stone compactionOrder the loose volume, build the compacted depth. This applies the right compaction factor so you do not run short on the last lift.
• Aggregate cubic metreFull metric workflow. Enter metres and millimetres, get cubic metres, tonnes and bulk bag counts.
• Gravel cost per tonThe quarry price is never the whole price. Add the haul fee and the load minimum to see what a ton actually lands at.
• kg to stoneEnter a weight in kilograms to get it in stone, in stone and pounds, and in pounds.
• Stone to kgEnter stone (and pounds, if you have them) to get the weight in kilograms and pounds.
• kg to lbs to stoneOne weight in, all three units out — kilograms, pounds, and stone with the remainder in pounds.

Charts and answers

Reference tables and the questions that come up on every stone order.

• Stone coverage chartSquare feet per ton at every depth, tons per cubic yard by product, grade numbers, bag counts and metric conversions.
• Stone FAQsQuantity, coverage, grade choice, weight conversions, delivery and 2026 pricing — answered in one place.

The written background behind these calculators — specs, depths, cost drivers and the mistakes that cost the most.

• Stone coverage and depth by applicationHow to work out stone coverage per ton, the right depth for beds, paths, driveways and drainage, and how much to add for compaction and spread loss.
• Choosing the right gravel for the jobPea gravel, #57 stone, crusher run, stone dust, river rock and decomposed granite compared — where each performs and where each fails.
• Stone weights and unit conversionsConvert between tons, cubic yards, cubic metres, kilograms and pounds for aggregate — plus the stone weight unit, and why US and metric tons differ.
• Drainage stone and how to build a French drainTrench sizing, slope, pipe choice, clean stone quantities and geotextile detailing for a French drain or drainage trench that keeps working.

Frequently asked questions