Professional Chess Clock
Tournament-grade clock: multi-stage time controls (e.g. 90 min + 30 s, plus 30 min after move 40), Fischer, Bronstein, delay and hourglass modes, undo, move log and low-time alerts. Works offline.
Time control & settings
Move log
Shortcuts: Space / Enter pass turn · P pause · U undo · R reset · F fullscreen
Using the clock
Tap your own side after you move; your opponent’s clock starts. The top clock is rotated for the player opposite (switch off in settings). In multi-stage controls, extra time is added to a player when they complete the stage’s move count. Once this page has loaded it works without internet, and it asks your device to keep the screen on during a game.
New to this? Read the full guide to the chess clock.
Chess Clock FAQ
Does the chess clock support increment and delay?
Yes: Fischer increment, Bronstein delay, simple delay and hourglass modes, plus multi-stage controls such as 40 moves in 90 minutes then 30 minutes with a 30 second increment.
Does the chess clock work offline?
Yes. Once loaded it works without an internet connection, so you can use it at over-the-board events.
Can I save my favourite time controls?
Yes. Save presets for blitz, rapid, classical or your club's standard controls and start them in one tap.
Can I undo a mistaken clock press?
Yes. Undo restores the previous clock state, and the move log shows the time used on each move.
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- Rating Toolkit – Elo rating change, performance rating, score planner and a saved rating history.
- PGN Studio – Merge, clean, filter, validate and analyse PGN files, and keep collections in your account.
- Diagram Studio – Build positions, add arrows and highlights, then export PNG or share a link.