Mower Tools & Calculators
Yard Size Calculator: What Mower Class Fits Your Lawn?
Enter your lawn's size, terrain, and grass type to get a suggested deck range, push vs self-propelled call, and a battery watt-hour budget with the math shown.
Mower Tools & Calculators
Three free browser calculators for battery mower research: match your yard size to a mower class, estimate battery runtime, and count deck passes.
Before you fall in love with a mower, do ten minutes of arithmetic. These three tools run entirely in your browser — nothing you type is sent anywhere — and each one shows its math so you can check our work with a pocket calculator.
- Yard size calculator — your lawn’s dimensions in, a mower class, deck range, and battery energy budget out. The best first step in the whole site.
- Battery runtime calculator — volts × amp-hours in, realistic runtime estimates for light, normal, and thick grass out.
- Deck passes calculator — how many passes a given deck will take across your lawn, and roughly how long the whole job runs.
The numbers from these tools feed straight into the guides: yard-size results map to the yard-size guides, runtime results to the battery education hub, and pass counts to the deck-size guide. And when the arithmetic is done, the shortlists are ready: best cordless lawn mowers for every yard size, or best robot mowers if the pass count convinced you to stop pushing altogether.
Guides in this section
Mower Tools & Calculators
Deck Passes Calculator: How Many Passes Across Your Lawn?
Enter your lawn's width or diameter and a deck size to see roughly how many passes a full mow takes and how long it runs at typical walking speed.
Mower Tools & Calculators
Battery Runtime Calculator: Volts × Amp-Hours to Real Mowing Time
Enter any mower battery's voltage and amp-hours to get watt-hours, plus estimated runtime for light, normal, and thick grass — with the assumptions stated.