Predicted Peak Expiratory Flow (PFR) Calculator

Dr Rajan Bowri

ENTER SEX: Male Female
ENTER HEIGHT: inches  OR  cm
ENTER AGE:
  
  
PFR:   litres/min

Note and disclaimer

I wrote this peak flow calculator for my own rough use a few years ago. It is not adapted for the new European standard, so I make no claims for its validity as a clinical tool. I don't use it much these days, as most UK GP software incorporates more sophisticated versions.