Chess Clock for Two Players on One Device
Free online chess clock for two players sharing one device. Seven standard presets (1+0, 3+0, 5+0, 3+2, 10+0, 15+15, 90+30) plus fully custom base time and increment. Supports Fischer increment, Bronstein delay and simple delay — the three standard FIDE-compatible time modes. Works on phones, tablets and keyboards.
How to use the online chess clock
Pick a preset (5+0 Blitz is the default) or set custom base minutes and increment seconds.
Fischer is standard; Bronstein refunds only time used; simple delay burns a grace period first.
White's clock starts. You can also just tap the White (bottom) clock to begin.
Tap your own clock or press Space — this stops your clock and starts the opponent's.
Pause to handle interruptions, Reset to start a new game with the same time control.
Set up your game timer for blitz, bullet or rapid with Fischer increment or Bronstein delay — and start the match.
| # | White | Black |
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Features
Frequently asked questions
What's the difference between Fischer, Bronstein and simple delay?
Fischer adds the increment to your clock after each move. Bronstein only refunds the time you actually used, up to the increment. Simple delay counts down the delay seconds first before your real clock runs. Fischer is most common in online play; Bronstein is popular in over-the-board blitz.
Can both players use one phone?
Yes — the tool is designed for that. Enable "Flip top player" to rotate the top clock 180° so the player opposite you sees their clock right-side up.
Does the keyboard work for both players?
Yes. Space ends the move of whichever side is currently on the clock. Two people alternating on one keyboard work fine; for competitive games the tap surface is usually faster.
Will it keep running if my screen goes off?
Browsers throttle JavaScript timers when the tab is hidden. Keep the page visible and turn off auto-lock for reliable timing. For high-stakes games, use a dedicated clock.
Why does my clock read "3.2" instead of "0:03"?
Below 10 seconds the display switches to seconds with one decimal (e.g. 3.2 = 3.2 seconds) — standard chess-clock behaviour so you can see tenths when flagging.
Can I configure a correspondence time control (days)?
Not directly — the base time input is in minutes (up to 240). For correspondence games use a dedicated platform like Lichess or Chess.com; this tool targets over-the-board games.
We can — and it's free! Just send us a quick message with your idea. If you'd like to discuss it in detail, leave your email and we'll get back to you. You can stay anonymous.
