Garden & Landscaping Calculators
Plan garden beds, lawns and landscaping deliveries with calculators for area, depth and volume. Choose mulch, gravel, soil, compost or sand when you need a loose material estimate, and use the lawn tools for sod, seed or fertilizer. Raised beds, retaining walls, ponds and pools have their own calculators to match the project shape. Keep depth units separate from area units, and check the difference between a loose delivery volume and a compacted layer. Supplier densities and package sizes vary, so compare the result with the product you intend to buy. Each page explains the measurements and assumptions behind its estimate.
Choose a calculator
- Artificial Grass CalculatorRolls, strip cuts, seams, joining tape and infill sand for an artificial lawn.Open calculator →
- Compost CalculatorCubic metres, cubic yards, bags and weight of compost to dig in or spread over a bed or lawn.Open calculator →
- Cubic Yard CalculatorCalculate a rectangular material volume in cubic yards and estimate trips for a chosen delivery capacity.Open calculator →
- Grass Seed CalculatorKilograms or pounds of grass seed for a new lawn or for overseeding.Open calculator →
- Gravel CalculatorVolume and weight of gravel for a driveway, path or bed, by stone type and depth.Open calculator →
- Hedge Plant CalculatorHow many hedge plants to buy for a given length, spacing and single or staggered double row.Open calculator →
- Lawn Watering CalculatorWeekly water a lawn needs after rainfall, and how long to run your sprinkler to deliver it.Open calculator →
- Lawn Fertilizer CalculatorHow much bagged lawn feed to spread for the nitrogen rate you want, from the N-P-K on the bag.Open calculator →
- Mulch CalculatorCubic metres, cubic yards and bags of mulch for any bed size and depth.Open calculator →
- Paver Base CalculatorEstimate a compacted aggregate layer and separate bedding sand layer beneath a rectangular paved area.Open calculator →
- Pond CalculatorWater volume, liner size and pump flow for a garden or fish pond.Open calculator →
- Pool Salt CalculatorEnter actual pool water volume, current salinity and the target specified by your salt chlorine generator.Open calculator →
- Pool Volume CalculatorLitres or gallons in a rectangular, round or oval pool, plus a basic chlorine dose.Open calculator →
- Potting Soil CalculatorMeasure a round tapered pot at its intended fill line and base.Open calculator →
- Rainwater Harvesting CalculatorLitres or gallons of rain your roof can collect in a year, and a sensible tank size.Open calculator →
- Raised Bed Soil CalculatorSoil for raised garden beds: volume per bed, topsoil and compost split, and bags.Open calculator →
- Retaining Wall CalculatorBlocks, cap units and drainage gravel for a small segmental retaining wall.Open calculator →
- Sand CalculatorVolume, weight and bags of sand for a sandbox, paver bedding or compacted fill.Open calculator →
- Sod CalculatorRolls, slabs and pallets of sod or turf for a new lawn, with a cutting margin.Open calculator →
- Topsoil CalculatorVolume, weight and bags or bulk loads of topsoil for lawns, beds and raised beds.Open calculator →