Count Up Timer
The short answer: this is a free count-up timer — an online counter that starts counting up from 0. Press Start (or the space bar) to track elapsed time, Lap to record a split without stopping the clock, Reset to return to zero, and Fullscreen for big digits. It counts past an hour, keeps hundredths of a second, and is driven from your system clock — so it stays accurate even if you switch tabs, and it picks the count back up if the page reloads. Nothing to install, no sign-up, no data collected. For a presentation timer that counts down to your limit and then keeps counting up into overtime over your slides, download SlideTimerApp, the free desktop overlay.
What is a count-up timer?
A count-up timer counts up from zero like a stopwatch. Instead of racing toward a deadline, it simply measures how much time has passed since you pressed Start — so the number on screen grows rather than shrinks. That makes it the right tool whenever you care about how long something takes: timing a talk, tracking how long a task really runs, or holding a workout set or a plank. There is no limit to hit and no alarm to dread; the clock just keeps climbing until you stop or reset it.
People reach for a count-up timer — also written “countup”, and just as often called a counter or a stopwatch — in dozens of everyday situations. Coaches time laps and intervals, students time focused study blocks, cooks time how long a step actually takes, and speakers rehearse to find their true running length. Because it has no endpoint, you stay in control: you decide when the measurement is over. That freedom is exactly why a stopwatch and a countdown feel so different in practice, even though both are just clocks.
How to use this count-up timer
- Start counting up. Press Start or tap Space — the timer counts up from 00:00 and keeps climbing until you stop it.
- Record a lap. Press Lap or L to log a split without stopping the clock. Each row shows that lap’s own duration next to the total elapsed time.
- Pause and resume. Pause freezes the count; Start picks it up from exactly where it stopped. Reset or R — available once you pause, so a stray keypress can never wipe a live measurement — returns to 00:00 and clears the laps.
- Fill the screen. Fullscreen or F blows the digits up for a projector or a shared screen.
Two optional switches sit under the buttons: turn hundredths off if the fast-moving decimals are distracting, and type a time into Beep at (for example 5:00) to get an audible nudge once the count passes it — useful when you are counting up but still have a soft limit in mind.
What this count-up timer does
Most free counters online stop being useful the moment you need more than a minute counter. Here is exactly what this one handles:
| Counts from | 00:00, upward, with no limit |
| Past an hour | Yes — the display expands to H:MM:SS |
| Precision | Hundredths of a second (switchable off) |
| Lap times | Yes — lap split and total elapsed |
| Accurate in a background tab | Yes — timed from the system clock |
| Survives a page reload | Yes — the count resumes where it was |
| Keyboard | Space start/pause, L lap, R reset (when paused), F fullscreen |
| Alert | Optional beep at a target elapsed time |
| Sign-up or cost | None — free, no account |
| Data collected | None — it runs entirely in your browser |
The two that matter most in practice are the least visible. Browsers throttle background tabs, so a counter that adds one second per tick quietly falls behind while you are answering an email; this one reads the elapsed time from the system clock every frame, so switching away and back leaves it correct. And because a long measurement is easy to lose to a stray refresh, the count and the laps are stored in your browser and picked straight back up — the same measurement, not a fresh zero.
Count up vs count down: which do you need?
Both measure time, but they answer different questions. Pick based on whether you have a deadline to enforce or a duration to discover.
| What you want | Count up timer | Countdown timer |
|---|---|---|
| Starts at | 00:00 (zero) | A set duration |
| Direction | Counts up | Counts down |
| Best for | Measuring how long something takes | Enforcing a time limit |
| Has an end point | No fixed end — you stop it | Yes — reaches zero |
| Typical use | Stopwatch, rehearsal, workout set | Exam, activity, presentation slot |
Need to count down instead? Grab a ready online timer with sound that rings at zero.
Overtime: when a countdown becomes a count-up
For presentations and events, the most useful timer does both. The free SlideTimerApp desktop overlay counts down to your limit, and the moment you hit zero it doesn't just stop — it keeps counting up into overtime, showing +M:SS with reminder beeps. A speaker can see at a glance not only that time is up, but exactly how far over their slot they have run, which is far more useful for staying on schedule than a clock that freezes at 00:00. It floats transparently on top of PowerPoint, Google Slides or Canva, so the count stays visible while you present.
This is the pattern that matters at a conference or a meetup with back-to-back talks: a flat alarm tells everyone the slot is over, but the overtime count tells the chair whether a speaker is ten seconds or three minutes long, so they can step in at the right moment. The web stopwatch above is perfect when you want a quick, single-screen elapsed-time display; the desktop overlay is what you want when a countdown needs to roll into a visible count-up over live slides. Together they cover both directions of timing without any sign-up or recurring cost.
Want a timer that counts into overtime?
SlideTimerApp counts down to your limit, then keeps counting up into overtime with +M:SS and reminder beeps — floating over your slides, free for Windows.
Download SlideTimerApp free ~3 MB · Windows · works offlineMore timers
Online timer with sound
A countdown that rings with an alarm at zero.
Conference timer
Keep speakers and sessions on schedule.
Speech timer
Counts down, then counts up into overtime.
Download SlideTimerApp
Float a timer over your slides into overtime.
Frequently asked questions
What is a count up timer?
A count up timer is a stopwatch: it starts at 00:00 and counts upward, showing how much time has elapsed since you pressed Start. Use it to track how long something takes — a talk, a task, a workout set or a study session — rather than counting down to a fixed deadline.
Is a count up timer the same as a counter?
In everyday use, yes. A count up counter and a count up timer describe the same thing: a clock that starts at zero and counts upward so you can read the elapsed time. People search for it as a counter up timer, a countup timer or simply a counter — the timer on this page does exactly that, climbing second by second until you pause or reset it.
Is this count up timer free?
Yes. The count up timer on this page is completely free, runs in your browser and needs no sign-up; the page is supported by ads. Press Start to count up from zero, Reset to return to 00:00, and Fullscreen for big digits the whole room can read.
How do I make a timer count up from 0?
Press Start on the timer above and it begins counting up from 0 immediately — there is nothing to set first. If you need a timer counting up from 0 on top of live slides, SlideTimerApp counts down to your limit and then keeps counting up into overtime, so the count stays visible over PowerPoint, Google Slides or Canva.
What is the difference between a count up timer and a countdown timer?
A count up timer starts at zero and counts upward to measure elapsed time, like a stopwatch. A countdown timer starts at a set duration and counts down to zero to enforce a time limit. Choose count up when you want to know how long something took, and countdown when you have a deadline to hit.
Does the count up timer keep running if I switch tabs?
Yes, and it stays accurate. Browsers slow down timers in background tabs, so a counter that simply adds a second per tick drifts behind while you are looking at another window. This one works out the elapsed time from your system clock every time it draws, so switching tabs, minimising the window or locking the screen does not cost you any seconds — come back and the count is exactly where it should be.
Can a count up timer count past an hour?
Yes. The display starts as MM:SS and expands to H:MM:SS the moment you pass 60 minutes, so a long meeting, exam or shift keeps reading correctly instead of showing something like 78:04. There is no upper limit — it will keep counting up for as long as you leave it running.
What happens if I reload the page while the timer is counting up?
The count survives. The elapsed time and your lap list are stored in your own browser, so an accidental refresh, a closed tab or a crash picks the measurement back up rather than dropping you at zero. Press Reset when you genuinely want to start over — that clears the stored count and the laps.
Can a presentation timer count up after time runs out?
Yes. SlideTimerApp, the free Windows overlay, counts down to your limit and then keeps counting up into overtime, showing +M:SS with reminder beeps. That way a speaker sees exactly how far over their slot they have run, instead of the timer simply stopping at zero.