TOOL NO. 18·CATALOG / TIME·NO SIGN-UP · RUNS LOCALv2.1 · VANILLA · CLK

The chronograph.

A precision stopwatch with lap splits, and a countdown timer with presets & alarm. One tool, two modes — keyboard-first, fullscreen-ready, built for the workbench.

10ms
Precision
2
Modes
8
Presets
COUNTDOWN TIMERREADYCH-02 · AUDIBLE ALARM
00:30
HR
MIN
SEC
CSEC
0%50100%
SETPRESETS
SETCUSTOM

Max 999 minutes · Alarm sounds at 00:00

USERECIPES
KEYBOARD Start / pauseL Lap (stopwatch)R ResetF Fullscreen12 Switch modeEsc Exit fullscreen
Category
TIME
Footprint
Zero deps
Runs on
This device only
License
Free · Ad-free
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HIIT 30 Second Interval Timer

Thirty seconds is a standard work-interval length for HIIT and tabata-style circuits, typically paired with an equal or shorter rest period between rounds. Run it fullscreen across the room so you can see the countdown mid-exercise, and the alarm marks the switch to rest.

Use it for

Other timers

← Stopwatch & full Chronograph tool