A chess clock gives each player a fixed amount of time, and the clock only runs for the player whose turn it is. For most players a digital clock with increment and delay options is the most useful choice. Analog clocks are simple and charming but offer fewer time controls.

How a Chess Clock Works
After you make a move, you press your side of the clock. That stops your time and begins your opponent’s. If your time runs out, you lose on time under standard rules, unless the position makes a win impossible. The clock does not judge the moves. It only keeps the pace fair.
Digital or Analog
- Digital clocks: support increments, delays and many preset formats such as blitz or classical.
- Analog clocks: have two dials, are simple and need no battery for display, but have fewer features.
Features and Why They Matter
| Feature | Why it matters | What to check |
|---|---|---|
| Increment | Adds time after each move | Support for Fischer-style increments |
| Delay | Gives a short pause before your time falls | Bronstein and simple delay modes |
| Multiple stages | Allows classical formats with extra time at move limits | Number of programmable periods |
| Button feel | Fast play needs quick, quiet presses | Responsive buttons with low noise |
| Display | Clarity under venue lighting | Large digits and good contrast |
| Rule approval | Some events limit clock types | Event rules and your federation’s guidance |
Using Your Clock Well
- Agree the time control before the game begins.
- Set the clock and check both sides display the same time.
- Make your move with one hand and press the clock with the same hand.
- Do not hold the clock or slam the buttons.
Learning the settings at home before a club night saves awkward moments at the board.
Etiquette is part of playing with a clock. Keep your hand on the piece you moved until you release it, press with the same hand, and do not hover over the buttons. If the clock malfunctions, stop it and call an organizer or agree a fair fix with your opponent. Calm habits keep games enjoyable for both sides.
Before an event, practice setting your clock until the steps feel natural. Learn how to pause, how to add time if rules allow it and how to read the display from across the table. Keep spare batteries in your bag, since a clock that fails mid-game causes stress for everyone involved.
FAQ
Do I need a clock for casual games?
Not always, but a clock keeps games moving and trains you to manage time, which is a real chess skill.
Can I use a phone app instead?
For friendly games, yes. Many clubs and events prefer physical clocks, so ask beforehand.
The Short Version
Choose a digital clock with increment, delay and several preset formats if you play often or in events. Choose a simple analog model only for relaxed games. Learn the settings in advance and keep clock etiquette in mind.