randomtimergenerator.com VS.

random.org

Random Timer Generator is a random countdown timer that allows you to input a Minimum and Maximum time, and then it will start a random timer somewhere within that range. Random Timer Generator allows you to create random timers countdowns, which makes it great as an exercise timer, a meditation timer, Musical Chairs timer, or as a timer for Hot Potato style games like Catch Phrase, The Last Word, Pass The Bomb... or Hot Potato.