Landscaping calculators & guides
Free landscaping tools and plain-English guides for United States — each gives the answer fast and shows the working behind it.
Pool volume calculator
How many gallons is my pool? Enter the shape and dimensions — get US gallons and litres for rectangle, round, oval and kidney pools.
Open tool →Slope calculator
What is the slope? Enter rise and run — get the percent grade, the angle in degrees and the ratio (1 in n), plus the length along the slope. For ramps, driveways, drainage falls and land grading.
Open tool →Fence calculator
How many fence panels do I need? Enter your fence length and panel width — get the panel count and posts. Switch to picket mode for posts, rails and individual pickets.
Open tool →Sod calculator
How much sod do I need? Enter your lawn length and width — get the area, square yards, pieces and how many pallets to order for a new lawn.
Open tool →Mulch calculator
How much mulch do I need? Enter your bed size and depth — get the cubic yards (or cubic metres) and the number of bags to buy for garden beds and borders.
Open tool →Paver calculator
How many pavers do I need? Enter the area length, width and paver size — get the count instantly, with a waste allowance for cuts and breakage.
Open tool →Topsoil calculator
How much topsoil do I need? Enter the area length, width and fill depth — get cubic yards, cubic metres and bag count instantly.
Open tool →Sand calculator
How much sand do I need? Enter length, width and depth — get cubic yards (or cubic metres), weight in tons, and the number of bags to buy instantly.
Open tool →Retaining wall calculator
How many blocks do I need for a retaining wall? Enter the wall size and your block size — get the blocks, courses, caps and base gravel to order, with a waste allowance.
Open tool →About landscaping calculations
Landscaping runs on area and volume. How much sod or turf covers a lawn, how much topsoil or gravel fills a bed to a given depth, how many edging units run around a border — every one of these is the same kind of measurement problem, where a few site dimensions decide how much material to order and how much it costs.
The landscaping tools here handle that arithmetic and the waste allowance that goes with it, showing the working so you can see how the lawn's shape and your piece size change the count. They take dimensions in feet or metres and convert as needed, because materials arrive in both imperial and metric units depending on the supplier.
Using the results
Treat the quantities as shopping figures, not guarantees. Living materials like sod and turf are perishable, so order them to arrive the day you lay them, and confirm the coverage per pallet or per roll with your supplier — it varies by grower. The number here tells you how much to buy; ground preparation, watering and timing are the parts that decide whether the lawn takes, so plan those alongside the order.