Count Up Timer
The short answer: this is a free count-up timer (stopwatch) that counts up from 00:00 — press Start to track elapsed time, Reset to return to zero, and Fullscreen for big digits. 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 — sometimes spelled "count-up timer" or just called 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
- Press Start — the timer counts up from 00:00, one second at a time.
- Watch the elapsed time climb; press Pause any time to freeze it, and Start again to keep going.
- Press Reset to send the display back to zero and begin a fresh measurement.
- Press Fullscreen for big digits the whole room can read on a projector or shared screen.
It runs entirely in your browser — nothing to install, no sign-up, and it keeps working even if your connection drops mid-session.
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.
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 this count up timer free?
Yes. The count up timer on this page is completely free, runs in your browser, needs no sign-up and collects no data. Press Start to count up from zero, Reset to return to 00:00, and Fullscreen for big digits the whole room can read.
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.
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.