Tools
Time Tools
Online timers and stopwatches that run right in your browser — set a countdown with an alarm or time anything to the hundredth of a second.
Five time tools that stay open in a browser tab: a countdown timer with an alarm, a stopwatch with laps, a Pomodoro timer for focused work sessions, a countdown to a date, and a time-zone converter for scheduling calls across cities.
Online Timer
Time Tools
Set a countdown timer with an alarm — no install.
Open toolCountdown Timer to a Date
Time Tools
Live countdown to any date — birthdays, launches, holidays.
Open toolTime Zone Converter
Time Tools
Convert a time across world time zones instantly.
Open toolOnline Stopwatch
Time Tools
Start, stop and lap a stopwatch in your browser.
Open toolPomodoro Timer
Time Tools
Focus timer with work and break cycles.
Open toolExplore
113 tools. Zero uploads. One place.
Every tool opens instantly, works on your phone and keeps your files on your device.
How the timers keep accurate time
Browsers slow down JavaScript timers in background tabs to save battery, which makes a naive countdown drift. The online timer and the stopwatch record the moment they started and recompute the remaining or elapsed time from the system clock on every tick, so switching tabs does not make them lose time — when you come back, the display catches up instantly. The Pomodoro timer counts its ticks instead, so it can fall behind if its tab is hidden for a long time; keep it visible or in its own window during a session.
Alarms and notifications
The online timer and the Pomodoro timer play a short tone through the browser's Web Audio API when a period ends; there is no browser notification and the tone does not repeat. Mobile browsers suspend audio in background tabs, so keep the tab in the foreground on a phone if the alarm matters. The countdown to a date is a display, not an alarm — it shows the days, hours, minutes and seconds left and updates every second.
Time zones without the guesswork
The time-zone converter uses the browser's built-in IANA time-zone database, so daylight-saving changes are applied automatically for the date you pick rather than assumed from today's offset. Pick a date and time in one zone and read it in several others at once — useful for the week a country changes its clocks and the usual mental arithmetic is off by an hour.
Frequently asked questions
Will the timer keep running if I close the tab?
No. The timers live in the page, so closing the tab stops them. Minimising the window or switching tabs is fine — the timer resumes at the correct remaining time.
What is the Pomodoro technique?
A work rhythm of 25-minute focused sessions separated by 5-minute breaks, with a longer break after four sessions. The Pomodoro timer automates the cycle; the lengths are adjustable.