Calculate Flow Rates and Pump Settings for Your John Blue Metering Pump

John Blue’s Ground Drive Metering Pumps Calculator calculates ground-driven piston pump and squeeze tube pump settings, application rates, and other metering pump flow parameters. The calculator works in both standard and metric units. Instructions are available below.

Instructions for Use

Choose Your Pump Type

Choose English or Metric Units

Select Drive System

Enter Swath Width (?)
Enter Number of Teeth for Drive & Driven Sprockets

(Help increasing/decreasing pump setting)
Enter Ground Speed
Miles Per Hour

I understand that John Blue Company is furnishing this calculator "as is" and that it is not covered by any warranty whatsoever, whether express, implied, or statutory, including, but not limited to, its freedom from errors, its fitness for any particular purpose, and/or its correct or incorrect use. I agree that by using this calculator, I am doing so at my own risk. I agree to hold John Blue harmless for any and all damages directly or indirectly related to the use of this calculator. In no respect shall John Blue Company incur any liability for any damages, including, but not limited to, direct, indirect, special, or consequential damages arising out of, resulting from, or in any way connected to the use of this calculator, whether or not based upon warranty, contract, tort, or otherwise; whether or not injury was sustained by persons or property or otherwise; and whether or not loss was sustained from, or arose out of, the results of this calculator and its use.


I understand that all calculations are based upon the information I provide. Always verify the calculated information before entering the field as variables within your system can cause differences between calculated rates and actual output rates.

Your Results: Estimated Pump Setting and Application Parameters

Pump Selected:
Sprocket Ratio:
Pump RPM:

Instructions for Use:

  1. Ensure JavaScript is enabled on your device. Most web browsers come with JavaScript installed and already working. (CRITICAL: This calculator will not work without JavaScript functionality).
  2. Select either “Piston Pump” or “Squeeze Tube Pump”.
  3. Select your “John Blue Pump Model”.
  4. Select your choice of either “English” or “Metric” units of measurement.
  5. If prompted, enter your “Application Rate”.
  6. Select whether you utilizes a “Ground Drive” or a “Press/Rub Wheel”.
  7. Enter your “Loaded Radius”.
  8. When prompted, enter either your “Swath Width” or “Row Space”.
  9. Enter the number of teeth for your “Drive and Driven Sprockets” (use multiple rows if necessary).
  10. Enter your “Ground Speed”.
  11. Read the “Warning” and the “Terms of Use” provided and and indicate your acceptance of the “Terms of Use” by putting a check in the checkbox.
  12. Click the blue button that says, “Click Here To Get Your Pump Settings”.
  13. Scroll down to the bottom of the page to view your John Blue pump settings.
  14. NOTICE: If after viewing your calculated pump settings, you decide to change any of the input form fields, be sure to resubmit your changes by clicking the blue “Click Here To Get Your Pump Settings” button once again. Failing to do so will result in improper pump settings.