How long is the ISTQB Foundation Level exam? The ISTQB Foundation Level exam from ASTQB is 60 minutes. If English is not your native language, you are eligible for a 25% time extension, meaning you will have 75 minutes to complete your ISTQB Foundation Level exam. Other ISTQB exams from ASTQB vary from 60 minutes to 180 minutes. All of those are also eligible for the 25% time extension. To see the complete list of ISTQB certification exams and how long each ISTQB certification exam is, go to the ASTQB ISTQB exam FAQ.