★ TIME & DATE · TIMERS · FREE TOOL
A free stopwatch that times to the hundredth of a second, with lap splits and a running total — no download, no sign-up, nothing to install. Press Start, tap Lap at each turn, and the table below fills itself in. The worked example underneath shows 4 laps of 400 m in 248.20 seconds.
Press Start to begin timing, Lap to record a split without stopping the clock, Pause to freeze the display, and Reset to start over. The display reads minutes, seconds, and hundredths: MM:SS.cs. A copy-link-to-result is not applicable to a running timer, so this tool has a print button for the lap table instead.
The display reads minutes, seconds, and hundredths of a second: MM:SS.cs. Press Start and the clock runs; press Pause and it freezes exactly where it is, without losing the laps you have already recorded; press Start again and it resumes from the frozen time. Lap records a split — the time since the previous lap — and the cumulative time at that moment, without stopping the clock. Reset clears the display, the lap table, and every split, ready for the next run.
A split is the time for one lap on its own; the cumulative time is the total since you pressed Start. The difference matters: if your splits are 62.40, 61.80, 63.10, and 60.90 seconds, the cumulative times are 62.40, 124.20, 187.30, and 248.20 seconds. The average lap is the total divided by the number of laps. The fastest lap is the smallest split. If your last lap is your fastest, as it is in the worked example, that is called a negative split — you finished stronger than you started.
Four laps of 400 m around a standard track — a 1,600 m run, one mile near enough. The runner's splits are 62.40 s, 61.80 s, 63.10 s, and 60.90 s.
| Lap | Split time | Cumulative time | Note |
|---|---|---|---|
| 1 | 62.40 s | 62.40 s | Opening lap |
| 2 | 61.80 s | 124.20 s | Settling in |
| 3 | 63.10 s | 187.30 s | Slowest lap |
| 4 | 60.90 s | 248.20 s | Fastest — negative split |
Total: 62.40 + 61.80 + 63.10 + 60.90 = 248.20 s (4 minutes, 8.20 seconds). Average lap: 248.20 / 4 = 62.05 s. Fastest lap: 60.90 s on lap 4. Slowest lap: 63.10 s on lap 3. Pace: 248.20 s for 1,600 m is 15.51 seconds per 100 m, or about 4:08 per mile.
Average lap: the total divided by the lap count — 248.20 / 4 = 62.05 s. Add a fifth lap of 61.00 s and the total becomes 309.20 s, the average 61.84 s.
Fastest lap: the smallest split — 60.90 s on lap 4. If lap 2 had been 60.50 s instead, the fastest lap would be lap 2 and the total 247.80 s.
Reverse — the target total: to average 60.00 s over 4 laps you need a total of 240.00 s — 8.20 s faster than the worked example, or 2.05 s faster per lap.
Pausing mid-run: pause at 124.20 s and the display freezes; the laps already recorded stay in the table, and Start resumes from 124.20 s, not from zero.
The stopwatch displays hundredths of a second, which is the precision a browser timer can honestly show: the underlying clock ticks every 10 ms, so the last digit is real but the timer can drift a few milliseconds per minute. That makes it fine for training, workouts, cooking, and experiments — and not suitable for official timing, where a certified system is required. Laps are stored only in your browser tab: refresh the page and they are gone, and nothing you time is ever sent anywhere. The display counts up without a limit, so a 90-minute session reads 90:00.00, not 30:00.00. Rounding convention: splits and totals are shown to two decimal places, computed from the raw millisecond values.
| Output | Formula | What it means |
|---|---|---|
| Elapsed time | now − start, plus paused time | 00:00.00 before you press Start. |
| Split time | cumulative now − cumulative at last lap | 62.40 s for lap 1 of the worked example. |
| Cumulative time | total since Start at the moment of the lap | 248.20 s at lap 4 of the worked example. |
| Total time | sum of all splits | 248.20 s for 4 laps of 400 m. |
| Average lap | total / lap count | 62.05 s across 4 laps. |
| Fastest lap | smallest split | 60.90 s on lap 4. |
| Slowest lap | largest split | 63.10 s on lap 3. |
| Pace per 100 m | total / 16 | 15.51 s per 100 m for the worked example. |
The stopwatch is accurate to the hundredth of a second as displayed, but it is a browser timer, not a precision instrument: it ticks every 10 ms through the browser's timer, which can drift by a few milliseconds per minute and can be delayed if the tab is in the background or the device is busy. That is fine for training, workouts, cooking, and experiments, and not fine for official timing, records, or anything where a hundredth of a second decides the result. The lap table lives only in your browser tab: refreshing or closing the page erases it, and printing the table is the way to keep it. There is no sound, no countdown mode, and no saved history — this is a stopwatch, not a training log. For countdowns, see our countdown calculator; for averaging times, see our average time calculator.
Bright Side Kit. "Stopwatch Online: Free Timer with Lap Times & Splits" https://brightoolbox.com/stopwatch/ Accessed October 24, 2026.Yes — completely free, no download and no sign-up. It runs in your browser: press Start, tap Lap at each turn, and the table fills in. Nothing you time is sent anywhere, and there is nothing to install.
Accurate to the hundredth of a second as displayed, with a few milliseconds of drift per minute. Browser timers tick every 10 ms and can be delayed if the tab is in the background. That is fine for training and workouts, and not suitable for official timing or records.
A split is one lap on its own; the cumulative time is the total since you pressed Start. In the worked example the splits are 62.40, 61.80, 63.10, and 60.90 seconds, and the cumulative times are 62.40, 124.20, 187.30, and 248.20 seconds.
Divide the total by the number of laps. Four laps totaling 248.20 seconds average 62.05 seconds a lap. The stopwatch shows the average automatically once you have recorded laps.
Running the second half faster than the first. In the worked example the last lap, 60.90 seconds, is the fastest of the four — the runner finished stronger than they started. Coaches treat a negative split as a sign of good pacing.
Yes. Lap records the split and the cumulative time without stopping the clock, so you can time a whole run in one go. Pause freezes the display; Reset clears everything.
No — they live only in your browser tab. Refreshing or closing the page erases the lap table, and nothing is sent anywhere. Use the print button to keep a copy of your laps.
Yes — it works for anything you time in stages. Cooks time recipe stages with Lap at each step; students time experiment trials and average them. For counting down to a time instead, see our countdown calculator.