K-Factor Calculator

K-Factor Calculator: Determine the number of pulses generated by GF Signet flow sensors

K-Factors are calibration values (pulses per unit of volume) used to convert flow sensor output frequencies to flow rates. This calculation tool helps you to determine the correct K-Factor for your flow sensor.

GF Signet publishes K-Factors for water only in gallons (pulses per gallon) and liters (pulses per liter) for all flow sensors, in all applicable pipe sizes and materials, and/or in all applicable installation fitting sizes and materials. Please contact GF Piping Systems Japan for JIS K-Factors.

K-Factors for fluids other than water must be determined empirically, typically on-site using a secondary standard. The number of pulses per volumetric unit may vary depending on the medium and the installation. For optimum performance, the system must be calibrated after installation

  • Select the type of fitting you use.
  • Choose the Signet Flow sensor you have in use.
  • Fill in the parameters to obtain K-Factor.

NOTE: For other pipe sizes, statistical K-Factors may be available in the online K-Factor Calculator tool. Alternatively, simply contact technical support for further information. Pipe roughness may affect the K-Factor, which is not considered in the calculation method. K-Factors for the following selections are calculated and are approximate values. To achieve the best results, please perform a flow calibration.


Georg Fischer Piping Systems Ltd

Ebnatstrasse 111

8201 Schaffhausen


GF logo on the headquarters building


Aaron Anderson

Junior Product Manager

Georg Fischer Signet LLC

3401 Aero Jet Ave.

91731 El Monte CA

United States