Precision stopwatch with start, stop, lap recording, and reset functionality. Lap times are displayed in a table for easy comparison. Everything runs locally in your browser — nothing is uploaded.
Configurable countdown timer with hours, minutes, and seconds input. Features start, pause, and reset controls with visual progress bar. Everything runs locally in your browser — nothing is uploaded.
Generate number sequences in arithmetic, geometric, or custom progression. Configure start value, difference/ratio, and count. Everything runs locally in your browser — nothing is uploaded.
Simple increment/decrement counter with a reset option. Track anything from reps to inventory counts. Everything runs locally in your browser — nothing is uploaded.
Parse X-RateLimit headers and compute usage percentage, reset times, and retry intervals. Supports standard X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset formats.
Trim and cut video clips locally in your browser. Select start and end times, preview, and download the result.
Millisecond display driven by high-resolution browser timers — plenty for sports splits, lab timings, and speedcubing. Not certified for official race timing.
Hit Lap anytime: the lap time and running total both record into the table. Export or copy the table for training logs and analysis.
Yes — elapsed time derives from the wall clock, so switching tabs doesn't lose time. Display updates may pause in background tabs; the final reading stays correct.
Stopwatch counts up from zero (measuring how long something took); timer counts down to zero (alerting when time is up). This page is the former.
No. Everything runs locally in your browser. Nothing leaves your device.
Timer
Configurable countdown timer with hours, minutes, and seconds input. Features start, pause, and reset controls with visual progress bar. Everything runs locally in your browser — nothing is uploaded.
Interval Timer
Repeating interval timer for workouts and training. Configure sets, work period, and rest period with automatic cycling. Everything runs locally in your browser — nothing is uploaded.