Stopwatch
A precise online stopwatch with start, pause, lap and reset. Times to a hundredth of a second — no app or download needed.
Spacebar to start/stop
Focus blocks? Pomodoro timer · preset countdown: Countdown timer · pace per km: Pace calculator.
A precise online stopwatch
Tap Start to begin timing to a hundredth of a second. Use Lap to capture splits with lap-to-lap difference, Start/Stop to pause, and Reset to clear. Press Spacebar to start or stop. Export laps as CSV for workouts and experiments.
FAQ
What can I use Stopwatch for?
Stopwatch is useful when you need to a precise online stopwatch with start, pause, lap and reset. Times to a hundredth of a second — no app or download needed. It is meant for quick checks, everyday workflows and practical tasks where a fast browser-based result is enough.
How do I use Stopwatch correctly?
Fill in the fields on the page and adjust any options before reading or copying the result.
What input does Stopwatch need?
Use the fields shown in the tool and keep the input close to the real case you want to solve. If the page includes examples or presets, start with those to understand the expected format.
What result does Stopwatch give me?
The tool returns a time, date, duration, schedule or countdown result based on your chosen inputs. In most cases the output updates instantly and can be copied, downloaded or used as a reference for your next step.
How accurate is Stopwatch?
Time tools depend on the dates, time zones and calendar assumptions you enter. Check edge cases such as daylight saving time.
Is my data uploaded when I use Stopwatch?
The tool is designed to run in your browser, so ordinary inputs are processed locally unless a page explicitly states that it needs an online lookup.
What common mistakes should I avoid with Stopwatch?
Check units, spelling, separators, dates, decimal points and empty fields before trusting the result.
What related tasks can Stopwatch help with?
Stopwatch is intended for use cases related to "stopwatch" and nearby needs such as "online stopwatch". For best results, follow the labels, examples and options on the page.
What are the limits of Stopwatch?
It is optimized for common web use, not unlimited batch processing or every edge case.
When should I double-check the output from Stopwatch?
Double-check the output whenever it affects money, safety, published content, customer work or an irreversible decision.