Keep screen awake:
This feature depends on browser and
device support. Some devices may still
turn the screen off or suspend the page.
Stopwatch and timer functions
The
stopwatch
measures elapsed time and can record
individual laps and split times.
A lap records the time since the previous
lap while also showing the total elapsed
time.
A split records the current total time
without restarting the lap measurement.
The
countdown timer
counts backwards from a time you choose.
Quick buttons are available for commonly
used countdowns.
Multi-Timer
lets you create several named countdown
timers and run them independently.
Timing is calculated using elapsed time
rather than assuming every screen update
occurs at an exact interval. This helps
the stopwatch remain accurate when browser
screen updates are delayed.