AnyTool
Your files never leave your device. All processing happens locally in your browser.

How do I use the online flip clock?

Open AnyTool Flip Clock and a big retro split-flap clock appears, showing the current time on flip cards that animate with a real CSS flip whenever a digit changes. Toggle 12-hour or 24-hour, turn seconds and the date on or off, pick a theme, scale the size, and press Fullscreen for an immersive desk or screensaver clock. Switch to Countdown mode to set minutes and seconds and watch the cards flip down to zero with a chime, or Stopwatch mode to time up in centiseconds. Everything runs locally — the time comes from your own device clock, and your preferences are saved only in your browser.

  • Big split-flap flip clock with a real CSS flip animation (no library, no images)
  • 12/24-hour with AM/PM, optional seconds field, and weekday + date line
  • Countdown timer (timestamp-based, flips to zero + chime) and a centisecond stopwatch
  • Six themes (Midnight, Classic, Paper, Amber, Mint, Rose) and size scaling
  • Fullscreen desk/screensaver mode; preferences saved locally — 100% in your browser

What is

Flip clock

A flip clock is a clock display styled after a mechanical split-flap board, where each digit sits on a hinged card and a leaf physically flips over to reveal the next number — the look of old train-station and bedside clocks. An online flip clock recreates that split-flap animation in the browser with CSS, reading the current time from your device and flipping a card whenever its digit changes. Beyond telling time it often adds 12/24-hour and seconds options, a date line, themes, a fullscreen screensaver mode and a countdown or stopwatch that uses the same flip cards.

Generators

Related terms

Split-flap displayDigital clockCountdown timerStopwatchFullscreen clockFliqloScreensaver clock

Frequently Asked Questions

Yes. Switch to Countdown mode, set minutes and seconds, and the flip cards count down to zero and chime when time is up.

AnyTool Flip Clock has three modes: a live Clock, a Countdown timer and a Stopwatch, all drawn on the same split-flap cards. In Countdown mode you set minutes and seconds (or tap a 1, 5, 10 or 25-minute preset), press Start, and the cards flip down to 00:00, at which point the display flashes and a synthesized chime plays. The countdown is timestamp-based — it stores a wall-clock end time and shows the difference from now every frame — so it cannot drift and self-corrects after a pause. The Stopwatch counts up in mm:ss with centiseconds.

Yes. One tap toggles 12-hour (with AM/PM) or 24-hour, and you can turn the seconds field and the date line on or off.

The flip clock shows hours and minutes as split-flap cards and lets you choose 12-hour format with an AM/PM indicator or 24-hour format with hours 00–23. You can add a seconds field of flip cards, and show or hide a line beneath the clock with the weekday and full date in your local format. You can also pick from six themes and scale the digit size to fit your screen. Every choice is remembered in your browser’s localStorage so the clock looks the same next time.

Yes. Press Fullscreen and the flip clock fills the screen, hiding the page chrome and ads for a clean desk or screensaver clock.

Press Fullscreen (or the sticky button on mobile) and the clock expands to fill the whole screen using the browser’s Fullscreen API, with the page controls and ads hidden so only the large split-flap clock remains — ideal as a bedside, desk, study or screensaver clock. The digits scale up automatically, and you can still see the date and your chosen theme. Press Esc or the minimize button to return. Because it is just a web page it works on any device with a browser, no install required.

It is 100% client-side: it reads your own device clock and saves preferences only in your browser, so it is as accurate as your device.

AnyTool Flip Clock runs entirely in your browser with no server, account or tracking. The time shown is your device’s own clock in your local time zone, so it is exactly as accurate as your computer or phone is set, and your preferences (12/24-hour, seconds, date, theme, size and the chime toggle) are stored only in localStorage and never uploaded. The flip animation is pure CSS and the countdown chime is synthesized with the Web Audio API, so there are no images, audio files or CDN, and it works offline once cached. Note that browsers throttle background tabs, so the animation pauses and an end-of-countdown chime may be slightly late until you return to the tab.

Detailed Explanation

Methodology

How the Split-Flap Flip Animation Works

AnyTool Flip Clock renders each digit as a split-flap card — a hinged card split horizontally into a top half and a bottom half — and animates a flip purely with CSS 3D transforms, with no animation library and no images. When a digit changes, the card shows the new digit statically on its top half and the old digit on its bottom half, then overlays two animated leaves: a top leaf carrying the old digit rotates down from 0° to −90° about its bottom edge, and immediately after, a bottom leaf carrying the new digit rotates up from 90° to 0° about its top edge. Using transform-style: preserve-3d and backface-visibility: hidden, the two-stage rotation reproduces the mechanical train-station board effect in roughly 0.6 seconds. The clock itself is a row of these cards grouped into hour, minute and (optional) second fields, re-evaluated several times a second so each card flips exactly when its digit advances; a prefers-reduced-motion media query collapses the animation for users who request reduced motion.

  • Each digit is a split-flap card with a top and bottom half divided by a hinge line
  • A top leaf rotates 0°→−90° (old digit) then a bottom leaf rotates 90°→0° (new digit)
  • Pure CSS: transform-style preserve-3d + backface-visibility hidden, no library, no images
  • Cards are grouped into hour / minute / optional second fields and flip per digit change
  • A prefers-reduced-motion query disables the flip for accessibility
How It Works

Clock, Countdown and Stopwatch Modes

Three modes share the same flip cards. Clock mode reads the device’s local time and shows hours and minutes (with an optional seconds field), togglable between 12-hour with an AM/PM indicator and 24-hour, plus an optional weekday-and-date line below. Countdown mode is timestamp-based: you set minutes and seconds (or pick a 1/5/10/25-minute preset), and on Start the tool records a wall-clock end time and displays end − now every frame, so the cards flip down toward 00:00 without drift and self-correct after a pause; reaching zero flashes the display and plays a four-note synthesized chime. Stopwatch mode counts up the same way, deriving elapsed time from a stored start timestamp and showing mm:ss with centiseconds. Six themes (Midnight, Classic, Paper, Amber, Mint, Rose) recolor the cards via CSS variables, a size slider scales the digits, and a fullscreen button uses the Fullscreen API to fill the screen and hide the page chrome and ads for a desk or screensaver clock. All preferences are saved in localStorage.

  • Clock mode: live device time, 12/24-hour with AM/PM, optional seconds and date line
  • Countdown: timestamp-based (endTime − now), flips to zero, flashes and chimes
  • Stopwatch: timestamp-based count-up in mm:ss with centiseconds
  • Six CSS-variable themes, a size slider, and Fullscreen API desk/screensaver mode
  • Preferences (format, seconds, date, theme, size, chime) persist in localStorage
Privacy & Security

Privacy and the Honest Device-Clock Note

Everything runs locally in the browser with no account, server or tracking. The time shown is the device’s own clock in the local time zone, so the clock is exactly as accurate as the computer or phone is set; the countdown and stopwatch are timestamp-based and therefore drift-free and self-correcting after a pause. Preferences — 12/24-hour, seconds, date, theme, size and the chime toggle — live only in localStorage and are never uploaded, the split-flap animation is pure CSS and the end-of-countdown chime is synthesized with the Web Audio API, so there are no images, audio files or CDN and the tool works offline once cached. Honestly, browsers deliberately throttle background tabs: when the page is not foregrounded the flip animation pauses and an end-of-countdown chime can arrive a little late until the tab is active again, so for a smooth, on-time result keep this tab in the foreground — it makes an excellent fullscreen desk, study or screensaver clock.

Flip Clock: in-browser (AnyTool) vs typical online flip clocks
CapabilityAnyToolTypical online flip clocks
Flip animationPure CSS 3D split-flap (no library, no images)Often JS/image-based or a sprite
Time format12/24-hour with AM/PM, optional secondsUsually 12/24-hour
DateOptional weekday + full date lineSometimes shown
Timer modesTimestamp-based countdown + centisecond stopwatchOften clock only, or a basic timer
ThemesSix themes + size scalingVaries; sometimes one
FullscreenFullscreen API desk/screensaver mode, ads hiddenUsually available
PrivacyDevice clock only; preferences in localStorageMay load remote assets / scripts
Cost / signupFree, no signup, works offlineOften ad-heavy

AnyTool draws the split-flap flip with pure CSS and reads only your device clock — but, like any web clock, the animation pauses in throttled background tabs.