Rubik's Cube Timer
A free speedcuber timer for the 3x3 cube: hold to ready, release to start, and track your best, mean, ao5 and ao12. Runs in your browser and saves your session — no sign-up.
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Hold Space or press and hold here, then release to start.
Solves
How to use the timer
- Read the scramble at the top and apply it to a solved cube. The small diagram shows the scrambled state so you can double-check.
- Hold the spacebar (or press and hold the timer on a phone). It turns amber, then green when it is ready.
- Release to start the clock, solve the cube, then press the spacebar or tap the screen to stop.
- A fresh scramble appears automatically, and your best, mean, ao5 and ao12 update after every solve.
- Use the +2 or DNF buttons on a solve to apply a penalty, or delete it. Clear session wipes everything.
If a scramble defeats you, paint the cube into the Rubik's Cube solver and watch the solution animate turn by turn. The Rubik's Cube tools hub lists both, and LK Forge's puzzle solvers and analyzers cover Sudoku, word search, chess and more.
Frequently asked questions
How do I start and stop the timer?
Hold the spacebar (or press and hold the timer on a touchscreen). It turns amber, then green after a short readiness delay. Release to start, then press the spacebar or tap the screen again to stop.
What do ao5 and ao12 mean?
ao5 is the average of your last 5 solves and ao12 the average of your last 12, each computed the WCA way: the single best and single worst solves are dropped and the rest are averaged. Dropping the extremes is what makes an average a better guide to your real speed than any one lucky solve. Two or more DNFs in the window make the average a DNF. Both figures update as soon as enough solves are in the session.
How do the +2 and DNF penalties work?
The +2 and DNF penalties are applied with the buttons next to any solve in the list. +2 adds two seconds to that time (shown with a trailing plus), and DNF marks it as did-not-finish, which counts as the worst result in averages. You can switch a solve back to OK at any time. A penalty changes the ao5 and ao12 immediately, because both are recomputed from the current session.
Does the timer save my times?
Yes — the timer saves your session in your browser's local storage, so a refresh will not wipe it. Nothing is uploaded to a server. The Clear session button removes all times whenever you want a fresh start. Because that storage is per browser and per device, your times do not follow you to another machine.
Does it work on a phone?
Yes — the timer works on a phone. On a touchscreen, press and hold the timer area until it turns green, release to start, and tap to stop, exactly like the spacebar on a desktop. The same readiness delay applies, so a quick tap will not start the clock by mistake. Scrambles, penalties, averages and the saved session all behave identically on mobile.