TimeStopwatch
33 free time tools · No sign-up

The best online stopwatch & time tools on the web

Precise stopwatches, timers, world clocks and calculators. Free, blazing fast and beautiful.

00:00:00.00
hours · minutes · seconds · centiseconds
Keyboard: Space start/pause · L lap · R reset · F fullscreen
Open full-screen stopwatch

Popular tools

Loved by millions every month.

Stopwatch
Precise online stopwatch with laps, ms accuracy & keyboard shortcuts.
Countdown Timer
Set a target time and count down with sound alerts.
Online Timer
Multiple simultaneous timers with presets.
Pomodoro Timer
25/5 focus intervals with cycle stats.
New Year Countdown
Live countdown to New Year midnight.
World Clock
Live clocks for cities around the world.
Unix Timestamp Converter
Convert Unix / epoch timestamps to dates.
Age Calculator
Your age in years, months, days, minutes.
Timers & Stopwatches
Stopwatch
Precise online stopwatch with laps, ms accuracy & keyboard shortcuts.
Countdown Timer
Set a target time and count down with sound alerts.
Online Timer
Multiple simultaneous timers with presets.
Pomodoro Timer
25/5 focus intervals with cycle stats.
Tabata Timer
20/10 HIIT training timer with voice cues.
Interval Timer
Custom workout intervals with warmup & cooldown.
Chess Clock
Two-player chess timer with FIDE presets.
New Year Countdown
Live countdown to New Year midnight.
Clocks & Time Zones
Alarm Clock
Wake up with browser alarms and sounds.
Full-screen Clock
Digital & analog clock, 12/24h, fullscreen.
World Clock
Live clocks for cities around the world.
Time Zone Converter
Convert times across timezones instantly.
Time Calculators
Age Calculator
Your age in years, months, days, minutes.
Yearly Calendar with Holidays
Full-year calendar with 15-country holidays + download.
Date Calculator
Add or subtract days from any date.
Time Calculator
Add / subtract times and durations.
Business Days Calculator
Count working days between two dates.
Week Number Calculator
ISO / US week number for any date.
Day of Year Calculator
Which day of the year is it (1-366).
Leap Year Calculator
Is it a leap year? Deep explanation included.
Days Until Calculator
Countdown days until any future date.
Converters
UTC / GMT Converter
Convert local time to UTC and back.
12h ↔ 24h Converter
Convert between AM/PM and 24-hour military time.
Unix Timestamp Converter
Convert Unix / epoch timestamps to dates.
Seconds ↔ Minutes ↔ Hours
Convert between any time units instantly.
Fun & Tests
Reaction Time Test
How fast are your reflexes? Take the test.
Clicks Per Second (CPS)
Test your click speed over 5, 10, 30 seconds.
Spacebar Counter
Count spacebar presses per second.
Metronome
Online metronome 20 – 300 BPM.
BPM Tap Calculator
Tap the beat, get the BPM instantly.
Sun & Moon
Sunrise & Sunset
Sunrise, sunset and golden hour for any location.
Moon Phase Calendar
Current moon phase and illumination.
nav.widgets
Free Clock Widget
Embed a live clock on your website in seconds.
Blazing fast
Optimized for < 1s load. Works offline as a PWA.
Beautiful & minimal
Modern design with dark mode & keyboard shortcuts.
Free & private
No sign-up, no ads bloat, no tracking of your times.

Frequently asked questions

Is TimeStopwatch really free?▼

Yes — 100% free, forever. No sign-up, no paywalls. We may show a couple of unobtrusive ads to cover hosting.

How accurate is the stopwatch?▼

The stopwatch uses your browser's high-resolution performance clock. In practice it's accurate to a few milliseconds, which is more than enough for cooking, workouts, meetings and general use.

Does it work offline?▼

Yes. TimeStopwatch is a Progressive Web App (PWA), so once loaded it caches automatically and every tool keeps working without internet.

Do you store my stopwatch data?▼

No. All laps, timers, favorites and inputs live only in your browser — nothing is sent to our servers.

Can I install it on my phone?▼

Yes. Open the site in mobile Chrome or Safari and pick “Add to Home screen” to get an app-like experience.