Chess clock

Run a two-player chess clock with common presets or a custom minutes+increment control.

Custom (e.g. 5+3 or 10:30+0)

Press your clock after you move.

Runs entirely in this browser tab. Keep the screen awake during a game.

Increment (Fischer) timing only — no delay or Bronstein. Pausing freezes both clocks; pressing your own clock starts the opponent's.

How to use

  1. Pick a time control.
  2. Tap your side to end your turn.
  3. Pause or reset as needed.

What it supports

Presets 1+0 through 30+0 plus custom 'min+inc' input. The first press starts the opponent's clock. Flags fall at zero; increment is added when a player's turn ends. Timing uses the device clock — not tournament-certified.

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