Garden and Landscaping Calculators
Calculators for outdoor jobs: fences, patios, paving, sub-base, gravel, topsoil, turf, artificial grass, decking, raised beds and wall coping.
Fence Calculator
Calculate exactly how many fence panels, posts and postcrete bags you need.
Use calculator →Close Board Fence Calculator
Derives boards per metre from your board width and overlap, with arris rails, posts, postcrete, gravel boards and a racking option for sloping ground.
Use calculator →Patio Calculator
Work out everything a patio build needs, in the order you'll actually buy and build it: excavation and spoil, sub-base, bedding, slabs and cuts, jointing, and edging.
Use calculator →Paving Slab Calculator
Slabs needed by size with cuts and offcut reuse, bedding sand and cement, jointing quantity, and a plan-view diagram of your chosen laying pattern.
Use calculator →Block Paving Calculator
Lays herringbone or stretcher bond over your area, counts whole and cut blocks, and shows the cutting.
Use calculator →Sub-Base Calculator
Compacted volume, loose volume to order, tonnage, bulk bags and muck away spoil.
Use calculator →Gravel Calculator
Enter your area and depth to get the weight in tonnes, bulk bags and 25kg bags. Covers pea gravel, slate, limestone, granite and MOT Type 1.
Use calculator →Topsoil Calculator
Volume in m3 and litres, weight in tonnes with the density basis shown, bulk bags at your own bag size, and loose vs bagged cost comparison.
Use calculator →Turf Calculator
Lays out every row of rolls with staggered joints, reuses offcuts, and links to the topsoil you need.
Use calculator →Artificial Grass Calculator
Lays out the strips with trim and seam overlaps, packs them onto 2m, 4m or 5m rolls, and counts tape, pins and sand.
Use calculator →Decking Calculator
Instantly work out how many decking boards, joists and screws you need, with waste allowance, cost estimate and layout diagram. Timber and composite supported.
Use calculator →Sleeper Raised Bed Calculator
Cutting list with overlapping corners, staggered joints and offcuts, plus fixings, liner and soil volume.
Use calculator →Coping Stone Calculator
Lays 600mm coping along each run of wall with 10mm joints, reuses the offcuts from cut stones, and checks the overhang.
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