Tref for F:
°C Zref for F:
°C

Calculations

How to use the Calculator:
Firstly, add your reference temperature and Z values to the boxes above; 121.1°C and 10°C for F0. 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.

Paste your excel data here:
Toggle Time Unit:
Time
Column
Temperature
Column
°C
Seconds
Minutes

Output

(Simpson's Rule) F value:
(Trapezoidal Rule) F value:
Time
Temperature
(°C)
Lethal Rate F