Configurable countdown timer with hours, minutes, and seconds input. Features start, pause, and reset controls with visual progress bar. Input never leaves your device — everything runs locally in your browser.
Countdown to a specific date and time with live days, hours, minutes, and seconds display. Perfect for event countdowns and deadlines. Input never leaves your device — everything runs locally in your browser.
Tabata interval timer with 20 seconds work and 10 seconds rest per round. Features a 3-second preparation countdown and configurable rounds. Input never leaves your device — everything runs locally in your browser.
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results. Input never leaves your device — everything runs locally in your browser.
Calculate the exact duration between two times. Handles overnight time spans and displays results in hours, minutes, and seconds. Numbers never leave your device — every calculation runs locally in your browser.
Count down the time until any future moment in days, hours, minutes, and seconds — launches, deadlines, events. See 45 days to launch live — free, local, no signup.
Set any duration via the hours, minutes, and seconds boxes — e.g. 0/25/0 for a Pomodoro block. There are no preset buttons; type the length each run.
The timer stops, the display shows 00:00:00, and the progress bar reaches 100%. There is no alert sound — watch the display for zero.
Yes. Start, pause, resume, and reset controls are available. The timer remembers the remaining time when paused.
The timer continues running if you switch browser tabs. However, some browsers may throttle JavaScript in background tabs, which could cause slight timing drift.
No. The timer runs entirely in your browser. No data is transmitted or stored.
Countdown Timer
Countdown to a specific date and time with live days, hours, minutes, and seconds display. Perfect for event countdowns and deadlines. Input never leaves your device — everything runs locally in your browser.
Stopwatch
Precision stopwatch with start, stop, lap recording, and reset functionality. Lap times are displayed in a table for easy comparison. Input never leaves your device — everything runs locally in your browser.
Last updated October 2026