Online Study Clock That Counts Up With Analog Hands
Start the study clock and look at it again 1 hour 25 minutes 40 seconds later. The short hour hand sits a little under halfway between the 1 and the 2. The blue minute hand has just passed the 5 mark, and the thin second hand points at the 8. Under the face, the digits read 01:25:40 and a line says "1h 25m into this session."
That is the whole idea of StudyClock's study clock timer. It looks like a wall clock, but its hands do not show the time of day. They show how long you have been studying since you pressed play. It suits a revision block where you cannot say in advance how long you will sit. It needs no account and has no end point, so it never rings. If you are signed in, a session that reaches 60 seconds goes into your study history when you press Reset.
How to read the clock hands
The face has 12 marks, with longer ones at the 12, 3, 6, and 9 positions and shorter ones between them. Three hands move around it, and each one counts your study time instead of the time on your wall.
- The minute hand (blue) makes one full turn every 60 minutes of study. Each mark is 5 minutes.
- The hour hand (dark and the thickest) makes one full turn every 12 hours of study. Each mark is 1 hour.
- The second hand (thin and pale blue) moves once a second and makes one full turn a minute.
Here is how those turns work out for the example above. At 5,140 seconds, the minute hand has gone 25.7 minutes round, which is 154 degrees, just past the 5 mark. The hour hand has gone 1.43 hours round, which is about 43 degrees, so it sits between the 1 and the 2. The second hand is at 40 seconds, which is 240 degrees, exactly on the 8. At 3 hours 10 minutes, the hour hand is just past the 3 and the minute hand is on the 2.
You can read the hour hand and the minute hand together as "which hour of my session, and how far through it." If you want a number, look under the dial. A line of small text gives the hours and minutes so far, such as "3h 10m into this session." Before you press play, the same line reads "Hands start the moment you press play."
If your device is set to reduce motion, the page respects that. It hides the second hand, stops the small pulse at the center of the dial, and lets the other two hands jump to their new spots instead of gliding.
Digits, status label, and tab title
Under the dial are the exact digits in hours, minutes, and seconds (01:25:40 in the example). The seconds digits are drawn in the accent color.
A small label above the dial says "Studying" with a pulsing dot while the clock runs, and "Ready" at every other time. That includes a pause, so a paused clock and a fresh clock carry the same label. To tell them apart, look at the digits, or at the browser tab. While the clock runs, the tab title reads "01:25:40 | Clock Timer" followed by the site name, and it changes every second. When you pause, the title gets a pause symbol in front of it. After a Reset, the tab goes back to the normal page title.
The dial has a fixed size, about 256 pixels across on most laptops and tablets and 224 on a narrow phone. This is a clock for a quick glance on your desk, not one that fills a wall. Browser zoom, with Ctrl and plus (Cmd and plus on a Mac), is the way to make it bigger.
Below the clock sits a study desk panel with Tasks, Chapters, and Revisions tabs. Full view hides it.
Start, pause, and reset
There are three round buttons, and none has a text label.
- Play and pause is one big blue button. It shows a play triangle until you start, then a pause symbol. When you pause and press play again, the clock carries on from where it stopped.
- Reset is the arrow button. It asks for no confirmation. One tap sets the clock to zero and ends the session. The page shows a warning message, "Study Clock Reset," and does not tell you whether the session was saved (see the next section).
- The speaker button sits next to Reset. At the moment it does not play any sound, so the clock stays silent whether the speaker is on or off. If you want audio while you study, the "Ambient sounds" and "Music player" buttons at the bottom left of the screen open the site's sound and music panels.
There is no Stop button and no keyboard shortcut. Pausing leaves the session open, and Reset closes it.
What gets saved when you sign in
Press play while signed in and the page creates a study session on StudyClock's server. Pausing is not sent anywhere. The pause is noted on your device and sent with the session when it closes, and the paused minutes are left out of the total. Pressing Reset closes the session.
A closed session counts if it holds at least 60 seconds of study time. A counted session earns 1 point for every full minute, so 1 hour 25 minutes 40 seconds gives 85 points. It also extends your daily streak and feeds your analytics. A session under 60 seconds is closed but not counted, and in your history it shows a small pause symbol marked "Stopped early." Time is credited up to 24 hours per session.
The streak rule is about calendar days in your own time zone. A counted session on the day after your last counted day adds 1 to the streak, a second one on the same day changes nothing, and a missed day sends the streak back to 1.
Sessions from this clock appear in your session history with the label "Study." This is not the label the study timer uses. Its sessions appear as "Clock timer."
Signed out, nothing is sent to an account. The clock still runs and still survives a reload, but when you press Reset, the time is gone.
Only one session can be open at a time. If you start any other StudyClock timer while this clock is running, the page closes the study clock's session, credits what it had, and sets this clock back to zero.
Linking a session to a chapter or task
When you are signed in, a box under the buttons reads "Link this block." It holds two pickers, "Link a chapter" and "Link a task." The chapter list comes from your Chapter Tracker and can be searched by chapter name or subject. The task list comes from your study to-do list and shows only tasks you have not finished.
Choose the chapter or task before you press play. The page reads your choice when the session starts. If you change it while the clock is running, nothing changes for that session. If it is counted, the chapter's total study time goes up by the session's length, its session count goes up by one, and its status changes to "In progress." A task you linked shows up as a tag beside that session in your history.
Keeping the screen awake
A phone or laptop that dims its screen after a minute defeats the point of a clock you glance at. While the study clock runs, the page asks the browser to keep the screen on, using the browser's Screen Wake Lock API. It lets go of that request when you pause or reset.
The request has limits that come from the browser, not from StudyClock. A browser releases the lock when the tab is hidden, and the page asks again when you come back to it. A request can also be refused when the device is in power-saver mode or the battery is low, and it works only on pages served over HTTPS. Closing a laptop lid still puts it to sleep. If your screen keeps going dark, plug the device in and turn off battery saver.
Among StudyClock's timers, only this clock and the Pomodoro timer make this request. The study timer and the online stopwatch do not, so on those pages your screen follows your device's normal sleep settings.
What happens if you reload or close the tab
The clock keeps its position in your browser's storage, under your account, so a reload does not lose it. A clock that was running keeps counting after you reload, and the minutes spent in another tab or window are counted. A paused clock comes back paused.
Every 15 seconds, a running clock leaves a fresh timestamp in your browser. Suppose the computer was shut or asleep and the last timestamp is more than 5 minutes old when the page wakes. Then the first 5 minutes of the gap are credited and the rest is dropped, so a clock left running overnight on a closed laptop does not show 10 hours of study.
A second tab of the same page mirrors the first, so pressing pause in one pauses both. Because the stored position belongs to the account, a clock you start while signed out is not carried over to your account when you sign in. Sign in first if you want the session saved.
Full view and mini mode
The page tools sit in a small dock at the bottom right: Feedback, Mini mode, and Full view.
Full view hides the navigation bar, the study desk panel, the text of this page, and the footer. It asks the browser for full-screen mode, and Esc brings everything back. The clock itself does not grow, so a full-screen laptop shows a clock of the same size on a very empty page.
Mini mode keeps a small timer on top of your other windows, with play, pause, and reset buttons. In Chrome and Edge version 116 or later, it opens as a separate floating window about 340 by 230 pixels. In other browsers it is a small panel you can drag around the page. The mini timer shows minutes and seconds, then hours, minutes, and seconds after the first hour. It shows digits only, without the hands.
Study clock timer, study timer, or stopwatch
All three count up from zero with no end, and all three save a counted session when you are signed in, under the same 60-second rule. What differs is what you see and what you can do on the page.
| Study clock timer | Study timer | Online stopwatch | |
|---|---|---|---|
| Main display | Hour, minute, and second hands, plus digits | A ring that fills once a minute, with hours, minutes, and seconds inside | Digit tiles down to hundredths of a second |
| Reset | One tap | Asks for a second tap once a run is going | One tap |
| Asks the screen to stay on | Yes | No | No |
| Label in session history | Study | Clock timer | Stopwatch |
Pick the study clock when you want a clock face you can read at a glance and a screen that stays awake. Pick the study timer when you want its three small readouts (time so far, start time, and minutes into the current hour) and a reset that does not happen by accident. Pick the stopwatch when you need hundredths of a second.
Using an open-ended clock for a long study block
A clock with no end gives you no signal to stop, so the plan has to come from you before you press play. Say you start a physics revision block at 6 pm and want about three hours with a short rest each hour. You press play at 6:00 and glance at the dial when the minute hand comes round to the 12 mark, which is 7:00 pm on your wall. You pause, rest for 10 minutes, and press play again. Because the pause is left out of the total, the session at 9:30 pm holds 3 hours of study, not 3 hours 30 minutes. It shows as one entry in your history.
Two habits keep that tidy. Pause for a short rest and press Reset only when you finish the whole block. And if you walk away for a long time, press Reset before you go. A paused clock stays paused, but the session stays open until you reset it or start another timer.
The hour hand is slow on purpose. It takes 3 hours to travel from the 12 to the 3, so one glance tells you whether you are in your first, second, or third hour without reading any digits.
When another tool fits better
You need a fixed block or a finish line.
The countdown timer ends with an alarm, and the Pomodoro timer runs focus and break cycles for you. The end-time timer shows the clock time a block will finish.
You are practicing a timed paper.
Use the countdown timer set to the length of the paper, so the clock runs out when the real one would.
You want to time one short task to the hundredth of a second.
Use the stopwatch.
You want company.
The study rooms live on a separate site, StudyClock Study Rooms. This clock is a solo tool.
You are not sure which mode suits you.
The focus test is a few quick questions that point to a mode, and the study clock guide helps you choose between them.
Cost, ads, and privacy
The clock is free to use, with no download, and it has no limit on how long you can leave it running. The pricing page lists the timer modes among the features of the free plan. Signing in does not alter the clock's appearance. It changes what happens after you press Reset: the session is stored, can carry a chapter or task, and counts toward your streak.
Google's advertising code runs on this page. What it collects, and what StudyClock collects itself, is set out in the Privacy Policy. The rules for using the site are in the Terms of Use.
Frequently Asked Questions
Yes. It has an hour hand, a minute hand, and a second hand, with digits underneath. The hands show how long you have studied since pressing play, not the time of day.
No. The clock face starts at 12 every time you start a session. For the time of day, use your device's own clock or the clock in the corner of the screen.
No. There is one clock face and one accent color, and no setting changes either. The sound and music buttons at the bottom left are the only things you can switch around the clock.
No. You can start the clock at once on any phone, tablet, or computer. An account is what saves a session of 60 seconds or more to your history and lets you link it to a chapter or task.
Four things cause this. You may have been signed out. You may not have pressed Reset, so the session is still open. The session may have been under 60 seconds, in which case it appears marked "Stopped early" instead of counting. Or you may be looking for the "Clock timer" label, which belongs to the study timer. Sessions from this clock are labeled "Study."
No. The speaker button next to Reset does not play any audio at the moment. The page also never rings, because there is no end point.
Usually, in browsers that support the Screen Wake Lock API. The page asks for it while the clock runs. The browser can refuse it in power-saver mode and releases it when the tab is hidden.
As long as you like. The clock never stops by itself, and a saved session is credited for at most 24 hours.