first time posting, hopefully someone might find the attached useful. I had to create this to calculate the audit duration for FSSC 22000.
The calculations are based off the FSSC 4.1 audit duration guidelines and ISO 22003, table B.1 - minimum initial certification audit time.
It also breaks it down for surveillance and re-certification as well as upgrade audits.
Loads of room for improvement, but I believe the calculations are correct so feel free to use as you like and hopefully will save someone a little bit of time!!