Garden & Outdoor Calculators
Plan your garden with our free garden and outdoor calculators. Work out how much topsoil to fill raised beds, the mulch needed to cover borders, how much turf to lay for a new lawn, and the pond liner and water volume for a water feature.
Each tool supports both metric and imperial units so you can order the right quantities for planting, lawns and landscaping.
Gardening Calculators(11)
Topsoil Calculator
Calculate the volume of topsoil needed for raised beds, lawns, and garden projects.
Mulch Calculator
Calculate the volume of mulch needed for garden beds, paths, and landscaping areas.
Sod / Turf Calculator
Calculate how many rolls or pallets of sod/turf you need for your lawn.
Grass Seed Calculator
Work out how much grass seed you need for a new lawn or overseeding based on lawn area and sowing rate.
Xeriscape Calculator
Estimate the number of drought-tolerant plants, mulch volume and total cost for a water-saving xeriscape landscape.
Landscape Edging Calculator
Estimate the total edging length, number of pieces and cost for a garden border, path or flower bed in metric or imperial units.
Pond Liner Calculator
Calculate the size of pond liner needed based on pond dimensions and depth.
Pool Volume Calculator
Calculate the water volume of a swimming pool in litres and gallons for rectangular, round and oval pools.
Water Volume Calculator
This water volume calculator works out how much water a tank, pool, pond or container holds. Enter the shape and dimensions and it gives the capacity in litres, cubic metres and gallons in an instant.
Artificial Grass Calculator
Work out how much artificial grass, weed membrane, sand infill and jointing tape you need for a garden.
Shed Base Calculator
Work out the concrete, paving slabs or gravel and sub-base for a shed base, sized to fit your shed.