Lawn Mowing Calculator
Estimate how long it takes to mow a lawn, and how many acres an hour a mower covers, from its width and speed.
Change the values and press Calculate to work out your own figures.
Enter the mower's width and speed and (optionally) the lawn area.
Show the working
- time = area ÷ (width × speed × efficiency)
How to use it
Enter the mower's width and speed and (optionally) the lawn area.
Lengths can be decimals, fractions or tape entries such as 12' 6 1/2" (in feet or inches). Prices are optional.
Key facts
acres per hour = width (ft) × speed (ft/h) × efficiency ÷ 43,560
Typical speeds
Push mowers go about 3 mph, lawn tractors 3–5 mph and zero-turn mowers 5–8 mph (commercial ones faster).
Questions
How long to mow an acre with a 22 in mower?
About 1 h 40 min at 3 mph.
Formulas
acres per hour = width (ft) × speed (ft/h) × efficiency ÷ 43,560
Sources
Limitations
- Material densities are typical values (the midpoint of the commonly published range); real loads vary with moisture, grading and compaction, so check with your supplier or type in their density.
- Tank results are the geometric volume; real tanks have wall thickness and fittings.