AnyCalc

Utility Tools

Timer & Stopwatch

Online countdown timer and stopwatch

Reviewed: AnyCalc Editorial|2026-07-19|Editorial policy|About

What this calculator does

The Timer and Stopwatch is a versatile online tool that combines a countdown timer and a stopwatch in one place. Use the countdown timer to set a specific duration for cooking, studying, exercising, or any timed activity. The stopwatch lets you measure elapsed time with precision, which is great for tracking workout intervals, timing speeches, or measuring how long a task takes. The tool runs directly in your browser with no app download needed. It features start, stop, pause, and reset controls, and you can set custom countdown durations. An alert sounds when the countdown reaches zero so you never miss the end of your timer.

00:00:05
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How to use

  1. 01
    Choose timer or stopwatch
    Select countdown timer mode or stopwatch mode.
  2. 02
    Set time and start
    Enter a countdown duration or press Start to begin the stopwatch.
  3. 03
    Track and record
    Use lap splits, pause, resume, and reset as needed.

Timer & Stopwatch FAQ

Does the timer work if I switch browser tabs?▾
Yes. The timer continues running in the background even if you navigate to another tab. An audio alert will notify you when the countdown finishes.
Can I set a timer for a custom duration?▾
Yes. Enter any duration in hours, minutes, and seconds. You can set it to common presets or type in your own custom time.
What is the Pomodoro technique?▾
The Pomodoro technique is a study method where you work for 25 minutes then take a 5-minute break. You can use the countdown timer to time each work and break session.

Interpret carefully

Outputs are decision-support estimates, not a substitute for professional judgment.

  • Treating Timer & Stopwatch output as a final professional diagnosis, quote, or legal determination
  • Entering approximate values when the result is sensitive to units or precision
  • Applying the FAQ answer (“Does the timer work if I switch browser tabs?”) to a special case without checking assumptions

Next steps

  1. Double-check inputs against your source documents (labs, statements, specs, or notes).
  2. Confirm the method below matches your use case before you act on the number.
  3. For medical, financial, or production decisions, verify with a qualified professional.

Disclaimer: Results are informational only and do not constitute medical, financial, legal, or professional advice. Report issues: sublimernj@gmail.com

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