Digital Clock
Big fullscreen current time + date
Tip — press F for fullscreen, H to toggle 12/24h, V to cycle view.
About Digital Clock
A digital clock in the browser is the fastest way to put a big, readable current time on any screen — a classroom projector, a desk monitor, a bedside tablet, a conference-room TV. Toolenza's version is fullscreen-capable, 12/24-hour toggleable, and dark by default so it doesn't glare at you at night. It uses requestAnimationFrame for buttery-smooth seconds and stays accurate to the browser's system clock (which itself syncs to NTP), so it never drifts.
Frequently asked questions
Yes. After the first load, the page runs entirely in your browser and needs no network. The clock reads from the system time, so as long as your device time is accurate the clock is accurate.
Yes — the time-zone selector accepts any IANA zone (e.g. America/New_York, Asia/Tokyo). Leave it on "device" to follow your OS setting including DST.
As accurate as your device's clock, which on modern operating systems is synced to NTP and stays within ~10ms of true UTC. The displayed seconds tick from a monotonic browser timer so they never jump.
Open the tool in two tabs and set each to a different zone — the fullscreen mode works independently in each. A dedicated multi-zone view is on the roadmap.
Hit F11 (Windows/Linux) or the built-in fullscreen button (macOS). The dark theme + oversized digits are readable from the back of a large room.
Embed this tool on your site
Drop a one-line iframe snippet into any blog, lesson plan, or knowledge base. Powered-by-Toolenza link included.
Embed this tool
Paste this snippet into any HTML page. The tool runs entirely in your reader's browser.
By intent
Digital Clock
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