Online Stopwatch

Free online stopwatch: start, stop, and reset in your browser, record laps, and read the elapsed time to the hundredth of a second.

A stopwatch for focused work

Start the stopwatch when you begin a task and stop it when you finish, using laps to mark the parts along the way. Everything runs in your browser, so nothing you time is saved or sent anywhere.

A stopwatch is great for a single task in the moment. When you want those minutes to become a record you can report and bill, Sandtime.io tracks time per project and turns it into clean timesheets.

Stopwatch questions

Does it keep time if I switch to another tab?

Yes. The elapsed time is the difference between two timestamps rather than a count of ticks, so a background tab that stops repainting still shows the right time the moment you come back to it.

Is my time saved if I reload the page?

No. Nothing is stored and nothing leaves your browser, so reloading or closing the page starts you from zero. Copy the laps out before you close it if you need them.

What does the lap button do?

A lap records the split without stopping the clock, which is the point: you can mark the end of one part of a task and keep timing the next one.

How precise is the display?

To the hundredth of a second. The hours segment appears once you pass an hour, so short timings stay easy to read.

When should I use a time tracker instead?

A stopwatch times one thing in the moment and forgets it. If the minutes need to become a record you can report on or bill for, they have to be attached to a project and a client, which is what a time tracker does.