About the Lawn Mowing Time Calculator
How long mowing takes from lawn size, mower width and walking speed.
Also known as: mowing time calculator, how long to mow, grass cutting time, mower productivity.
How to use this calculator
- Enter lawn area, cutting width, walking speed, overlap between passes and the other fields.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
time = area ÷ (effective width × speed) × obstacle factor
Worked example
Using the values pre-filled in the calculator above:
- Lawn area = 400 m²
- Cutting width = 46 cm
- Walking speed = 3 km/h
- Overlap between passes = 10 %
- Extra time for edges and obstacles = 25 %
the calculator returns:
- Mowing time: 24 min 9 s
- In hours: 0.403
- Mowing rate: 1,242 m²/hour
- Effective cutting width: 41.4 cm