Countdown Timer
NewCount down to a target date/time or a set duration, with quick-add time buttons.
Countdown timer
Countdown Timer
Count down to a deadline or build a quick duration with one-click increments.
Countdown idle
Choose a mode and set a countdown.
Frequently Asked Questions
What is Countdown Timer?
Countdown Timer is a free, browser-based tool that count down to a target date/time or a set duration, with quick-add time buttons. No installation or account is required — it works instantly in any modern browser.
How does Countdown Timer work?
Countdown Timer processes your input locally in the browser using JavaScript. Simply paste or type your data, configure any available options, and the result is displayed immediately.
Is Countdown Timer free?
Yes, completely free. All tools on Web Developer Toolbox are free to use with no limits, no premium features, and no account required.
Does Countdown Timer work offline?
Yes. When you install Web Developer Toolbox as a Progressive Web App (PWA), all tools including Countdown Timer work fully offline via a service worker cache.
Is my data private when using Countdown Timer?
Yes. All data processing happens entirely in your browser. Nothing is sent to a server — your data stays on your device and is cleared when you close or refresh the page.