Set timer for 1 min. Start the online timer set for one minute. Add or subtract time. Sound alarm notification is optional.
How to use 1 minute timer
The timer will tell you when your 1 minute has run out. It will keep counting upward instead.
Sound notification (alarm) is optional. You can keep the timer running in the background if you for example open a new tab. If you have sound notification the timer will tell you when time is up.