If you would rather not use the app
Lawn calculators
The same maths that runs inside the lawn app, pulled out one sum at a time. Nothing to install, nothing to sign up for, and nothing you type here leaves your browser.
Fertiliser dose
Feed what the grass can use instead of the bag rate. Less mowing, less thatch, less product.
Sprayer calibration
Measure your knapsack once, then turn any label rate into what goes in the tank
Lawn area
Add up odd-shaped lawns from rectangles, triangles and circles
Sprinkler run time
Catch cup test, so you water to a depth instead of guessing at minutes
Topdressing and sand
How many cubic metres, litres or bags for the depth you want
Which grass is it?
Six questions about your lawn, narrowed down to the most likely type
Fertiliser comparison
55 Australian fertilisers side by side, ranked by what you are trying to do
These are the cut-down version
A calculator does one sum and forgets. The app knows your lawn's size and grass type so you never type them again, turns any label rate into what goes in your sprayer, counts the nitrogen you have used this year, tracks what you spent, and tells you what is due next.
Free. No account. No Pro tier. Nothing is locked and nothing is paywalled.