Lawn mowing calculator

Estimate mowing time from area, effective swath, travel speed and your allowance for turns and obstacles.

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Lawn area (m²)

Effective cutting width (m)

More inputs and assumptions

Travel speed (m/min)

Working efficiency (%)

Answer

…

Estimate mowing time from area, effective swath, travel speed and your allowance for turns and obstacles.

More results

Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Step-by-step calculation

Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

Time = area ÷ (width × speed × efficiency). Use net effective width after overlap. Efficiency is a scenario assumption; measured productivity and safety depend on terrain, mower and operator.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-26

Using Lawn mowing calculator

Estimate mowing time from area, effective swath, travel speed and your allowance for turns and obstacles.

Time = area ÷ (width × speed × efficiency). Use net effective width after overlap. Efficiency is a scenario assumption; measured productivity and safety depend on terrain, mower and operator.

Next: Rectangle calculator

A worked example

Example inputs: lawn area (m²) = 1000, effective cutting width (m) = 0.5, travel speed (m/min) = 60, working efficiency (%) = 80. Mowing time (minutes) = 41.6666666667.

Before you use the result

Time = area ÷ (width × speed × efficiency). Use net effective width after overlap. Efficiency is a scenario assumption; measured productivity and safety depend on terrain, mower and operator.

Example results for lawn area (m²)

These examples use Effective cutting width (m): 0.5; Travel speed (m/min): 60; Working efficiency (%): 80. They are reference calculations, not recommended settings.

Lawn area (m²)	Mowing time (minutes)
500	20.8333333333
1000	41.6666666667
2000	83.3333333333

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