National Weather Service United States Department of Commerce

Altimeter Setting

by Tim Brice and Todd Hall


Enter the elevation of the station and choose your units6: Altimeter Setting in in. of mercury:
feet meters in HG
Enter your station pressure (not the altimeter setting) and choose your units: Altimeter Setting in mm of mercury:
in of mercury mm of mercury millibars (hPA) mm HG
  Altimeter Setting in millibars (hPa):
  mb (hPA)


What is the formula for the altimeter setting script?