Interval Timer

https://martinkoban.com/interval-timer/   

Using the Timer

1. Set the length for phases 1 and 2.

2. Choose your desired duration

3. Set your warmup time

Using the controls below the timer you can also switch to a darker color theme, change the volume, bookmark your current settings for future use, or get HTML code to embed an interval timer with your current settings elsewhere.

If you want to make the timer bigger, use CTRL + + on PC or ⌘ + + on Mac.