Garden Calculators & Planners
9 free calculators to help you plan garden projects, from sheds and fencing to lawns and greenhouses.
Garden Shed Size Calculator
Work out the right shed size for what you need to store, and how much space it will take up in your garden.
Lawn Seed Calculator
Calculate how much grass seed you need based on your lawn area and whether you are overseeding or starting from bare soil.
Greenhouse Heating Calculator
Estimate the heater wattage you need to keep your greenhouse frost-free through a UK winter.
Garden Zone Planner
Split your garden into lawn, patio, planting and storage zones and see how much space each one takes up.
Fence Panel Calculator
Calculate how many fence panels, posts and bags of postcrete you need for your garden boundary.
Soil & Compost Calculator
Work out how much topsoil or compost you need to fill a raised bed or border.
Mulch Calculator
Calculate how much mulch you need to cover a border or bed at the right depth.
Garden Hose Finder
Answer a few quick questions and we’ll recommend the right garden hose for you.
BBQ Guest & Food Calculator
Work out how much meat and charcoal you need based on how many guests you are feeding.