Garden Calculators & Planners

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.

Decking Screw Calculator

Work out how many decking screws you need based on your decking area and joist spacing.

Garden Treatment Dilution Calculator

Work out how much concentrate and water to mix for weedkillers, feeds and other garden treatments.

Hedge Trimmer Reach Calculator

Find out whether your hedge height needs a handheld trimmer or a long-reach pole trimmer.

Plant Spacing Calculator

Work out how many plants you need to fill a bed or border at your chosen spacing.

Planter Pot Soil Calculator

Work out how much compost you need to fill round or square planters and pots.

Pond Liner Size Calculator

Work out the pond liner dimensions you need based on your pond length, width and depth.

Trellis Panel Calculator

Work out how many trellis panels and fixings you need for your boundary or wall.

Weed Membrane Calculator

Work out how many rolls of weed control membrane you need for your patio or decking project.