Counts real elapsed time
The display shows days, hours, minutes and seconds from the moment this tracker began in the current tab session.
No judgment. Just timestamps.
How long has this tab been open?
The honest online timer that keeps counting while this page quietly becomes part of your furniture.
This tracker has been open for
0days
00hours
:
00minutes
:
00seconds
Press C to copy. Press R twice to restart.
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Simple by design
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How the online tab-open timer works
Open the page and the clock starts immediately. It calculates elapsed time from one local timestamp, so background-tab throttling cannot quietly steal minutes from the total. Leave, return, refresh—the timer catches up honestly.
Calls out the milestones
One minute is a peek. Thirty minutes is furniture. At the bigger moments, the page gives you the tasteful “wow” you earned.
Stays private by default
No sign-up, saved history or cloud sync. The start time exists only inside session storage for this browser tab.
Accuracy without pretending
What this tab timer can—and cannot—know
A webpage cannot ask your browser for the exact time a tab was originally created. Any site claiming otherwise is estimating. This online tab timer starts when you first open the tracker in the current tab and stores that timestamp for the session.
That means switching to another tab or minimizing the window does not pause the result. Refreshing usually keeps the same start time. Clicking Restart clock is the deliberate way to begin again.
- ✓
It measures: time since this tracker started in the current tab session.
- ✓
It survives: background time and ordinary refreshes in the same tab.
- ×
It cannot recover: time spent in the tab before you opened this page.
Questions, answered
Online tab timer FAQs
How can I see how long this browser tab has been open?
Open this page and the timer begins immediately. It shows the elapsed days, hours, minutes and seconds since this tracker first started in the current tab session.
Does the timer keep running when I switch tabs?
Yes. The result is calculated from the saved start timestamp, so it remains accurate while this page is in the background and catches up as soon as you return.
Does refreshing reset the online tab timer?
Usually no. The start time is held in session storage for this tab, so an ordinary refresh continues the same timer. Use the Restart clock button when you want a fresh start.
Can a website know exactly when a browser tab was created?
No. Browsers do not expose a universal tab-creation timestamp to webpages. This tool is intentionally honest about measuring from the first time the tracker loads in the current tab session.
Is my tab-open time private?
Yes. The tracker stores one start timestamp in this tab's session storage. It does not upload your duration, keep a cross-device history or require an account.
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Try other useful browser tools
Use the realization, flash a reminder, or turn the next few minutes into focus.