Field Capacity Calculator
Acres per hour from width, speed, and efficiency.
Inputs
%
Results
Effective capacity (ac/hr)
13.64
Theoretical capacity (ac/hr)18.18
Acres per day136.36
Hours to complete field11.73
Days to complete field1.2
How to Use This Calculator
- Enter Travel Speed (mph) for the planned field operation.
- Set Implement Width (ft) for your planter, sprayer, tillage tool, or harvester.
- Set Field Efficiency (%) — tillage runs 80–85%, planting 55–70%, combining 65–75%.
- Enter Field Size (acres) and Hours per Day to get a completion timeline.
- Review Effective Capacity (ac/hr), Acres per Day, Hours to Complete, and Days to Complete for scheduling.
How the result changes with Travel speed (mph)
| Travel speed (mph) | Effective capacity (ac/hr) |
|---|---|
| 3.09 | 8.43 |
| 11 | 30 |
| 20 | 54.55 |
| 27 | 73.64 |
What each input means
- Travel speed (mph)
- Ground speed during field operation in miles per hour.
- Implement width (ft)
- Working width of the implement in feet.
- Field efficiency (%)
- Accounts for turns, overlaps, fill/empty time. Tillage ~80-85%, planting ~55-70%, combining ~65-75%.
- Field size (acres)
- Total acres to be covered in one pass.
- Hours per day
- Available working hours per day.
What each result means
- Theoretical capacity (ac/hr)
- Maximum possible acres per hour at full speed with no downtime.
- Effective capacity (ac/hr)
- Actual acres per hour after accounting for field efficiency losses.
- Acres per day
- Total acres covered in one working day.
- Hours to complete field
- Total machine hours required to cover the entire field.
- Days to complete field
- Working days needed to complete the entire field.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersTravel speed (mph) = 5, Implement width (ft) = 30, Field efficiency (%) = 75, Field size (acres) = 160 = 5 input(s) provided
- Calculate Effective capacityEffective capacity = theoreticalCapacity * efficiency13.64 = 13.64
- Calculate Theoretical capacityTheoretical capacity = (speedMph * widthFt) / 8.2518.18 = 18.18
- Calculate Acres per dayAcres per day = effectiveCapacity * hoursPerDay136.36 = 136.36
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