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Calcimator

GPS Guidance Overlap Calculator

Calculate fuel and input savings from GPS auto-steer compared to manual steering overlap.

Inputs

acres
ft
inches
%
$
$

Results

Acres Saved

78.6 acres

≈ 16 city blocks

Total Annual Savings

$3,380.28

≈ 3 smartphones

Manual Overlap Width4.8 ft
GPS Overlap Width0.1 ft
Fuel Savings$628.89
Input Savings$2,751.39
Overlap Reduction98.3%
Manual Passes119.57
Gps Passes110.15
How to Use This Calculator
  1. Enter Total Acres per Year, Implement Width, and GPS Accuracy.
  2. Set Manual Overlap, Fuel Cost per Acre, and Input Cost per Acre.
  3. Review Acres Saved (acres) and Total Annual Savings ($).
  4. Use Manual Overlap Width (ft) and GPS Overlap Width (ft) to inform your decision.
  5. Use the chart to visualize the results and explore different scenarios by adjusting inputs.

How the result changes with Manual Overlap

Manual OverlapAcres SavedTotal Annual Savings
2.927.6 acres$1,187.28
7.6575.1 acres$3,229.78
13128.6 acres$5,530.28
18178.6 acres$7,680.28

What each input means

Total Acres per Year
Annual acres covered for this operation.
Implement Width
Working width of sprayer, planter, or applicator.
GPS Accuracy
Pass-to-pass accuracy of GPS system (RTK ~1 in, WAAS ~6 in).
Manual Overlap
Typical overlap percentage when steering manually.
Fuel Cost per Acre
Fuel cost for this field operation per acre.
Input Cost per Acre
Chemical, seed, or fertilizer cost per acre.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Total Acres per Year = 1000, Implement Width = 60, GPS Accuracy = 1, Manual Overlap = 8 = 6 input(s) provided
  2. Calculate Acres Saved
    78.6 = 78.6
  3. Calculate Total Annual Savings
    Total Annual Savings
    3380.28 = $3,380.28
  4. Calculate Manual Overlap Width
    Manual Overlap Width
    4.8 = 4.8
  5. Calculate GPS Overlap Width
    GPS Overlap Width
    0.1 = 0.1

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