CropIRLog Title version HortPlus Plant & Food Research
PET Calc

Manual PET Calculator

Fill in the variables below from your own measuring instruments and click the 'Calculate' button to work out the Potential Evapotranspiration (PET) using the Penman/Monteith method.

Maximum Temperature:
Minimum Temperature:
Maximum Relative Humidity:
Minimum Relative Humidity:
Wind Speed (ms-1):
Day of Year (1-365):

Calculated PET: 5.57