Free Landscaping Calculators
Know how much mulch, rock, soil, pavers, sod, seed and fertilizer to buy before you start. Each calculator uses rates and depths from university Extension services and other sources we link on every tool.
Yard material calculators
How much to buy for beds, paths and patios.
- Mulch CalculatorFree mulch calculator: add your beds, pick a depth and bag size, and get the cubic yards or bags of mulch you need, using Extension formulas and depths.Open calculator
- Topsoil CalculatorFree topsoil and compost calculator: enter your area and depth to get cubic yards or bags for new beds, low spots or topdressing a lawn, with Extension tips.Open calculator
- Gravel and Rock CalculatorFree gravel and landscape rock calculator: enter your area and depth to get cubic yards and tons of gravel, river rock or crushed stone, with extra for waste.Open calculator
- Paver CalculatorFree paver calculator: get the number of pavers and cubic yards of base gravel and bedding sand for a patio, walkway or driveway, plus a typical installed cost.Open calculator
Lawn calculators
Sod, seed and fertilizer for the lawn you have.
- Sod CalculatorFree sod calculator: measure your lawn to get the square feet and pallets of sod to order, with 10% extra for cuts, plus a typical professional installed cost.Open calculator
- Grass Seed CalculatorFree grass seed calculator: pounds of Bermuda, zoysia, centipede, bahia, tall fescue or bluegrass seed for a new lawn or overseeding, from Extension rates.Open calculator
- Lawn Fertilizer CalculatorFree lawn fertilizer calculator: enter the nitrogen number on the bag, your lawn size and the rate you want, and get pounds of fertilizer and bags to spread.Open calculator
How these calculators work
- Measure each bed, path or lawn as rectangles and circles, add as many areas as you need, and the total updates as you type.
- Every calculator shows its formula and links the sources for its rates, depths and prices, so you can check the numbers.
- Results stay in the page address, so you can copy the link and come back to it or send it to someone.
- Bloggers, Extension offices and suppliers can cite or embed any calculator for free.
Sources behind the numbers
- Texas A&M AgriLife Extension: how much compost, soil or mulch
- Iowa State University Extension: how much mulch a bed needs
- Mississippi State University Extension: mulch depths
- UF/IFAS Extension: mulch
- Clemson Cooperative Extension: topdressing a home lawn
- Purdue Extension: establishing a lawn from sod (AY-28)
- Lawn Love: river rock cost and tons per cubic yard
- This Old House: landscape rock cost and coverage
- This Old House: how to lay a budget-friendly gravel path
- Western Interlock: paving stone installation
- Concrete Masonry & Hardscapes Association: paver base depth
- This Old House: paver patio cost
- Lawn Love: sod cost
- UGA Extension: Lawns in Georgia, establishment (B1533-2)
- K-State Research and Extension: fall turfgrass recommendations
- University of Arizona Extension: overseeding Bermudagrass with winter grasses
- Purdue Extension: establishing turfgrass areas from seed (AY-3)
- Purdue Turfgrass Science: calculating the pounds of fertilizer to apply
- Iowa State University Extension: how to calculate fertilizer rates for the lawn
- Iowa State University Extension: when to fertilize the lawn
- UGA Extension: Lawns in Georgia, selection and species (B1533-1)
- UGA Extension: spring fertilization of lawns
- UF/IFAS Extension: fertilizing your Florida lawn
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