Clocks, timers & time math that actually slaps.
No sign-up, no uploads, no ads watching your stopwatch. Every tool runs live in your browser — pick one and go.
Stopwatch
Start, lap, and stop with precision.
Countdown Timer
Set minutes & seconds, get an alarm.
Multi-Timer
Run several countdowns at once.
Pomodoro Timer
Focus sprints with built-in breaks.
Interval / Lap Timer
Work & rest rounds for workouts.
Alarm Clock
Set a time, this tab will yell at you.
Flip Clock
A big beautiful live clock display.
Reaction Time Test
How fast are your reflexes, really?
World Clock
See the time in cities around the globe.
Time Zone Converter
Convert a time between two zones.
Meeting Time Planner
Find overlap hours across time zones.
Meeting Cost Calculator
What is this meeting costing, live.
Sleep Cycle Calculator
Best times to sleep or wake up.
Age Calculator
Exact age in years, months, days.
Date Difference
Days between any two dates.
Countdown to a Date
Days left until the big day.
Milestone Calculator
When do you hit 10,000 days old?
Retirement Countdown
Days left until you clock out forever.
Time Duration Calculator
Add or subtract hours & minutes.
Elapsed Time Calculator
Time between two clock times.
Work Hours Calculator
Clock-in/out into a timesheet total.
12h ⇄ 24h Converter
Flip between clock formats instantly.
Unix Timestamp Converter
Epoch seconds ⇄ human dates.
Cron Expression Builder
Turn cron syntax into plain English.
Countdown Widget Generator
Embeddable countdown snippet for your site.
Random Time Generator
Spin up a random time or date.