Tref for F:  °C  Zref for F:  °C 
How to use the Calculator:
Firstly, add your reference temperature and Z values to the boxes above; 121.1°C and 10°C for F_{0}. Next select your your time units, seconds or minutes. Paste your time series and temperature series data into the corresponding columns below. Equal numbers of both series must be added. I have configured the calculator to work with a minimum of four paired values. You can post thousands of paired values. After the data has been added press the Generate Table and Calculate Tabs to obtain F values and a graph of time verus lethality.
Column 
Column °C 





(Simpson's Rule) F value:  (Trapezoidal Rule) F value: 

(°C) 
