Free tools
Lawn calculators
The three numbers people get wrong most often: how much sand, how long aerating takes, and how many bags of joint sand. Run yours in a few seconds.
Topdressing Sand Calculator
Enter your lawn area and depth to get cubic yards, tons and 50 lb bag counts for sand, compost or a blend.
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Aeration Time & Coverage Planner
Work out how long a core-aeration job takes, how many passes clay needs, and roughly how many plugs you will pull.
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Paver Joint Sand Calculator
Paver size, joint width and depth turned into bags of polymeric sand, with real coverage per bag.
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