Thirteen calculators, free
Lawn calculators
The same tools that ship inside the app. No account, no sign-in, and nothing you type leaves your browser.
Lawn area
Break an irregular lawn into rectangles, circles and triangles and add the sections up. Every other figure needs this one.
FeedingSpreader
Product rate from the bag’s nitrogen number, and the catch test that checks your spreader against it.
FeedingNutrient (N-P-K)
What a bag’s three numbers deliver in pounds of nitrogen, phosphate and potash.
FeedingCoverage & cost
How many feeds a bag gives you over your lawn, and what each one costs.
FeedingRate converter
Move between a product label’s per-acre rate and a per-1,000 ft² rate.
SoilLime
Limestone needed to raise soil pH, by soil texture, and whether to split it across passes.
SoilSoil jar test
Turn settled layer measurements into sand, silt and clay percentages.
SoilTopdressing
Compost or sand volume from lawn area, layer depth and bag size.
WaterSprinkler run time
A catch-can test turns “water half an inch” into minutes on your own timer.
SprayingSprayer
Calibrate with plain water, then work out product per tank and how many tanks the job takes.
GrassSeeding
Published seeding rates by species, for a new lawn or an overseed, multiplied for your area.
GrassMowing
The one-third rule: when to mow, what a planned cut removes, and how to step down safely.
GrassGrass clippings
A rough volume and returned-nitrogen estimate from a mow.
The app also carries a watering-day helper and a set of species, feeding, root-depth, FRAC and tank-mix reference guides. Those depend on the app’s shared calendars and agronomy catalogues; they remain in the app until the same source can drive both surfaces.