Online Stopwatch
Press start and it counts up. Record laps, no sign-up needed.
Shortcuts: Space to start or pause · L for a lap · R to reset
In short
A stopwatch counts UP: you start it at zero and it shows how much time has passed, so you can measure how long something actually takes. A timer does the opposite — you set a duration and it counts DOWN to zero to tell you when time is up. If your question is "how long did that take me?", you want a stopwatch; if it is "warn me in ten minutes", you want a timer. This stopwatch runs in your browser, displays hundredths of a second and records laps with both the split and the total time.
🍅 What if the time you focus counted for something?
This stopwatch only measures time. PomoDomate turns that time into progress: every focus session you finish earns coins and XP, your Domate pet grows with you, and streaks, weekly challenges and country rankings give you a reason to come back tomorrow. Lo-fi music is built in, so you do not need another tab open. It is free and ad-free, and you can start right away in guest mode — an account only matters when you want your progress saved in the cloud and your name on the rankings.
- 🪙 Coins and XP for every completed focus session
- 🍅 A Domate pet that grows as you focus
- 🔥 Streaks, weekly challenges and country rankings
- 🎧 Built-in lo-fi music, no extra tab
Free, no ads. Guest mode works without an account.
What people use an online stopwatch for
🏃 Training and sport
Time a run, a set of exercises or the rest between sets. The lap button stores each repetition without stopping the count, so you can compare split times when you are done.
🍳 Cooking
Measure how long a step really took — proving dough, reducing a sauce, roasting — and write it down so the recipe comes out the same next time. For "call me in ten minutes" a countdown timer is the right tool instead.
📝 Timed study and mock exams
Practise under exam conditions: start the stopwatch, mark a lap at the end of each section and see where your time actually goes. It is the fastest way to find the questions that eat your exam.
🎤 Talks and rehearsals
Rehearse a presentation and mark a lap at every slide or section. You end up with a real breakdown of your talk instead of a guess about whether it fits the slot.
Stopwatch or timer: which one do you need?
They are opposites, and it is worth being precise. The stopwatch counts up from zero and answers "how long did this take". The timer counts down from a duration you choose and answers "tell me when the time is up". Studying in fixed blocks, interval training and recipes with a set time all call for a countdown; measuring, comparing and racing call for a stopwatch.
If what you actually need is a countdown: 25 minute timer · Simple Pomodoro timer
FAQ
How do I record laps on this stopwatch?
Press the Lap button while the stopwatch is running, or hit the L key. Each lap is stored with two numbers: the split, which is the time since the previous lap, and the total elapsed time, with the most recent lap at the top. Space starts and pauses, R resets everything.
What is the difference between a stopwatch and a timer?
A stopwatch counts up from zero to measure how long something takes. A timer counts down from a duration you choose and alerts you when it reaches zero. Same clock, opposite direction — and opposite question.
Does the stopwatch keep counting if I switch tabs?
Yes. It works out the elapsed time from the moment you pressed start, not from an internal tick counter, so a browser throttling background tabs cannot make it drift: come back and the reading is correct. It does not save any history, though — reloading or closing the page puts you back at zero.
Do I need to install anything or create an account?
No. It runs in your browser, it is free, there is no sign-up and no ads. An account only matters in the full PomoDomate app, where finished focus sessions turn into coins, XP, streaks and rankings — and even there you can try it in guest mode first.
Other timers: 25 minute timer · 45 minute timer · 1 hour timer