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Calcimator

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
  1. Enter Travel Speed (mph) for the planned field operation.
  2. Set Implement Width (ft) for your planter, sprayer, tillage tool, or harvester.
  3. Set Field Efficiency (%) — tillage runs 80–85%, planting 55–70%, combining 65–75%.
  4. Enter Field Size (acres) and Hours per Day to get a completion timeline.
  5. 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)
3.098.43
1130
2054.55
2773.64

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

  1. Identify Input Parameters
    4 parameters
    Travel speed (mph) = 5, Implement width (ft) = 30, Field efficiency (%) = 75, Field size (acres) = 160 = 5 input(s) provided
  2. Calculate Effective capacity
    Effective capacity = theoreticalCapacity * efficiency
    13.64 = 13.64
  3. Calculate Theoretical capacity
    Theoretical capacity = (speedMph * widthFt) / 8.25
    18.18 = 18.18
  4. Calculate Acres per day
    Acres per day = effectiveCapacity * hoursPerDay
    136.36 = 136.36

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