Lawn and landscaping calculators
20 free tools for materials, lawn care, hardscape, water, planting, and costs. Each shows the formula and a worked example so you can verify the answer.
Bulk materials
Work out how much mulch, soil, gravel, or sand a project needs.
Mulch Calculator
Enter your bed dimensions and how deep you want the mulch. You'll get cubic yards, the number of 2 cu ft bags, delivered weight, and whether bags or bulk works out cheaper at that volume.
OpenGravel Calculator
Gravel is ordered by the ton but measured by volume, so this calculator gives you both. Pick your stone, enter the area and depth, and you'll get cubic yards, tons, and a delivered cost range.
OpenTopsoil Calculator
Topsoil is heavy, roughly a ton per cubic yard, so knowing the weight matters as much as the volume. Enter your area and depth for yards, bags, and delivered tonnage.
OpenSoil Calculator
Work out soil volume for any planting area, then see it costed as bags and as bulk. Handles rectangular beds, curved borders, circles, and irregular shapes built from sections.
OpenCompost Calculator
Compost gets applied far thinner than mulch or soil, and the right depth depends entirely on the job. Enter your area and pick the application to get volume, bags, and cost.
OpenSand Calculator
Enter your area and depth for sand volume in cubic yards, tons, and 50 lb bags. Includes the right sand type and layer thickness for paver bedding, which is where most sand estimates go wrong.
OpenLawn
Seed, sod, fertilizer, and lawn size.
Grass Seed Calculator
Seeding rates differ by species by a factor of twenty, bermudagrass wants 1 lb per 1,000 sq ft, perennial ryegrass wants 8. Pick your grass and whether you're starting fresh or overseeding.
OpenSod Calculator
Enter your lawn area to get square feet, individual pieces, and pallets, plus the cut allowance you'll actually need. Sod is perishable, so ordering short means a second delivery fee.
OpenFertilizer Calculator
Turf guidance is written in pounds of nitrogen per 1,000 sq ft, but fertilizer is sold as a percentage analysis. This converts between them for any bag you have, enter the three numbers on the front.
OpenLawn Area Calculator
Almost every other lawn number depends on this one. Break your yard into simple shapes, subtract the parts that aren't grass, and get a square footage you can use for seed, fertilizer, and quotes.
OpenLawn Calculator
Rather than running four calculators separately, enter your lawn size and grass type once and get the full picture, seed, nitrogen for the year, water per week, and what the whole thing costs to maintain.
OpenHardscape
Pavers, concrete, and fencing.
Paver Calculator
Enter your patio or walkway size and paver dimensions to get the paver count plus every layer underneath, base depth by traffic type, bedding sand, joint sand, and edging.
OpenConcrete Calculator
Get cubic yards and exact bag counts for slabs, footings, cylindrical piers, and stairs, plus whether mixing bags or ordering ready-mix makes sense at your volume.
OpenFence Calculator
Enter your fence run and style to get post count, rail count, picket count, and the concrete for setting posts, plus how deep the holes need to be.
OpenWatering
Sprinkler layout, run times, and irrigation scheduling.
Sprinkler Calculator
Work out how many heads your area needs, how far apart they go, how long to run them, and how many zones your available flow supports. Spray heads and rotors need completely different run times, this shows why.
OpenIrrigation Calculator
Find out how much water your lawn or garden actually needs each week, in both inches and gallons, and how to split it across the week for your soil type.
OpenPlanting
Plant spacing and raised bed soil volume.
Plant Spacing Calculator
Find out how many plants a bed needs at your chosen spacing, and how many fewer you need if you offset the rows. Triangular spacing fits about 15% more plants into the same ground.
OpenRaised Bed Soil Calculator
Enter your bed dimensions to get total fill volume and a mix breakdown. Raised beds swallow far more soil than people expect, a single 4 × 8 ft bed at 12 inches deep takes nearly 32 cubic feet.
OpenCost
Budget landscaping projects and lawn care services.
Landscaping Cost Calculator
Pick a project, enter its size, and set your market. You'll get a DIY material cost and an installed cost range, with the drivers behind the spread spelled out.
OpenLawn Care Cost Calculator
Build a service plan and see what it costs per visit, per month, and per year. Mowing usually accounts for most of the total, and lawn size matters less than people expect.
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