This calculator estimates how much field area an agricultural robot can cover from average travel speed, effective working width, operating time, and field efficiency. It is useful for area-based operations such as spraying, mowing, mechanical weeding, cultivation, or scanning where each pass covers a known swath width.
The theoretical field-capacity relationship converts speed in kilometers per hour and width in meters into hectares per hour. Field efficiency then reduces that ideal rate to account for non-covering movement and operating losses such as headland turns, overlap, stopping, refilling, route corrections, and short delays. Because efficiency varies with field shape and task, the estimate is most useful when calibrated with actual job records. The calculation does not account for weather shutdowns, charging beyond what is reflected in operating hours, inaccessible zones, or different speeds within the field.
Coverage geometry assumptions
km/h
m
hr
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Result
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estimated area covered
Theoretical field capacity—
Effective field capacity—
Travel distance—
1. Enter average field speed Use the robot’s representative moving speed while performing the task, in kilometers per hour.
2. Enter effective working width Use the actual swath width covered on each pass, in meters.
3. Set operating hours Enter the time period over which you want to estimate coverage.
4. Estimate field efficiency Enter the percentage of theoretical field capacity retained after turns, overlap, stops, and similar losses.
5. Review covered area The main result shows hectares covered, with theoretical and effective hourly rates in the breakdown.
Theoretical field capacity (ha/hr) = Speed (km/hr) × Working width (m) ÷ 10
Effective field capacity = Theoretical field capacity × Field efficiency
Area covered = Effective field capacity × Operating hours
The factor 10 converts km/hr × m to hectares per hour. Field efficiency is entered as a percentage and converted to a decimal.
What the result means
The main result is the estimated hectares covered during the entered operating period after applying field efficiency.
Use an effective working width rather than nominal implement width when overlap or edge exclusions materially reduce the swath.
Interpretation: At the stated speed, width, and efficiency, the robot could cover just under 9.5 hectares during 7.5 operating hours.
What does field efficiency represent?
It is the ratio of effective area coverage to the theoretical straight-line capacity. It captures losses from turns, overlap, stopping, and other time or distance that does not add new covered area.
Why is there a divide-by-10 in the formula?
At 1 km/h over a 1-meter width, the theoretical area is 1,000 square meters per hour. Since one hectare is 10,000 square meters, the conversion factor is 10.
Should working width equal implement width?
Not always. Use the effective swath that receives the task; planned overlap, crop spacing, edge offsets, or sensing geometry can make it smaller than the nominal implement width.
Does operating time include charging?
Enter the hours during which the coverage estimate should apply. If charging occurs inside that period and prevents field work, reduce operating hours or field efficiency accordingly.
How is this different from fleet sizing?
Coverage estimates area completed by the entered operating setup. Fleet sizing starts from a required area and deadline and calculates how many robots are needed.