No accumulated drift
The remaining time comes from an exact finish timestamp instead of counting interval ticks.
Free · private · no sign-up
Make every minute count.
A clean, accurate online countdown timer that keeps running through tab switches and accidental refreshes.
Runs locally in your browser
Countdown timer controls
Set the clock
Choose your duration
QUICK START
Custom time
Refresh-safe & private. Your timer stays in this browser and remains accurate when you switch tabs.
Ready when you are
Space to start · R to reset
00
hours
:
05
minutes
:
00
seconds
Built for focus
Quiet design. Dependable behavior.
The details that matter are handled in the background, so you can focus on the thing you started the timer for.
Refresh-safe state
The running countdown, selected duration, and sound choice stay in this browser.
Clear next action
Presets, large controls, status text, and keyboard shortcuts remove setup guesswork.
How to use it
Start a countdown in three steps.
Use a countdown when you know how much time is available. To measure how long an open-ended task takes, use the session timer with history.
- 1
Choose the duration
Pick a familiar preset or enter hours, minutes, and seconds. Minutes and seconds are limited to 0–59 to keep the time easy to read.
- 2
Start, pause, or add time
Start the timer, pause and resume when needed, or add one minute without rebuilding the countdown.
- 3
Watch and listen for zero
The display changes to “Time is up” and plays the optional end sound. Reset returns to the selected duration.
Countdown timer FAQ
Useful details before you start.
Clear answers about accuracy, browser storage, sound, and privacy.
Will this countdown keep running in a background tab?
Yes. The timer saves its exact finish time and calculates the remaining time from the clock, so delayed browser updates do not accumulate into timer drift.
What happens if I refresh or close the timer tab?
The current countdown is stored in your browser. When you return, it restores the timer and calculates how much time is actually left. Browser storage must remain available for this to work.
Does the timer make a sound when it reaches zero?
The end sound is on by default and can be turned off. Browser audio policies, muted devices, or closed tabs may prevent a sound, so keep the visible timer available for important timing.
Is this countdown timer free and private?
Yes. It uses built-in browser features, requires no account, and sends no timer settings to a server. There are no credits, quotas, or paid timer packages.