Garden & Lawn Calculators
Ready to green up your lawn or design a new garden bed? Our free gardening calculators help you estimate the exact amounts of compost, mulch, topsoil, seed, sod, and spacing required for healthy, beautiful results. Choose a tool below to plan your landscape project.
Compost Calculator
Free compost calculator — estimate organic compost volume in cubic yards, weight in tons, and retail bags (1 cu ft or 2 cu ft) for lawns and garden beds.
Dry Well Calculator
Free dry well calculator — calculate dry well storage capacity, gravel surround volumes, and compare against storm runoff volumes for yard drainage.
French Drain Calculator
Free French drain calculator — calculate gravel volume in yards or tons, perforated pipe length, filter landscape fabric area, and total cost.
Grass Seed Calculator
Free grass seed calculator — calculate the pounds of grass seed needed for tall fescue, bluegrass, or ryegrass (new lawn vs overseeding).
Gravel Calculator
Free gravel calculator — estimate gravel volume in cubic yards, weight in tons, and material cost for patios, driveways, walkways, and drainage projects.
Landscape Fabric & Weed Barrier Calculator
Free landscape fabric & weed barrier calculator — calculate landscape rolls, overlap wastage, and required anchor pins or staples for garden beds.
Landscape Lighting Voltage Drop Calculator
Free landscape lighting voltage drop calculator — calculate voltage losses on low-voltage garden lighting wires based on load wattage, distance, and gauge.
Lawn Mowing Time & Efficiency Calculator
Free lawn mowing calculator. Calculate how long it takes to mow your lawn in hours/minutes based on deck width, mowing speed, efficiency, and acreage.
Mulch Calculator
Free mulch calculator — calculate cubic yards, bags, and cost for your garden or patio project. Works for all mulch types.
Plant Spacing Calculator
Free plant spacing calculator — estimate how many plants, flowers, shrubs, or vegetables are needed for a garden bed based on spacing and grid/triangular patterns.
Pond Volume & Pump Size Calculator
Free pond volume calculator. Estimate pond capacity in gallons, required rubber liner dimensions (including depth and overhang), and recommended filtration pump GPH.
Rainwater Harvesting Calculator
Free rainwater harvesting calculator — estimate monthly and annual water collection volume in gallons based on roof footprint and local precipitation.
Sod Calculator
Free sod calculator — estimate how many rolls, pieces, or pallets of grass sod turf you need to plant a fresh lawn, including project costs.
Soil & Topsoil Volume Calculator
Free soil calculator — estimate landscaping soil, topsoil, or compost volume in cubic yards, weight in tons, and retail bag counts.
Square Footage Calculator
Free square footage calculator — calculate area in square feet, square yards, or square meters for any shape. Perfect for patios, rooms, and gardens.
Stepping Stone & Pathway Calculator
Free stepping stone & pathway calculator — calculate stepping stone counts, sand bedding layer weights, stride spacing offsets, and material budgets.
Tree Spacing & Hedge Calculator
Free tree spacing & hedge calculator — calculate tree quantities, staggered planting layouts, hedge densities, and estimated plant costs.
Vegetable Garden Yield & Raised Bed Soil Calculator
Free vegetable garden calculator. Estimate raised bed soil volume in cubic yards/bags, plant spacing counts, and seasonal harvest yield in pounds.
Yard Runoff & Stormwater Calculator
Free yard runoff & stormwater calculator — estimate rainwater runoff volume in gallons or cubic feet using the Rational Method based on ground surfaces.