IconVault's Stopwatch is a precision timer with 10 millisecond (centisecond) accuracy, showing hours, minutes, seconds and centiseconds in a clean tabular readout. Start, stop and reset with big buttons, and press Lap at any moment to capture split times. Every lap records its own time plus the delta versus the previous lap, with best and worst lap highlights so pacing problems jump out immediately.

A scrollable lap table lists every split with its delta and running total, and you can export all laps to CSV for analysis in a spreadsheet. The stopwatch itself is unlimited and free and runs fully in your browser with no signup; CSV export uses the free trial and Pro unlocks unlimited exports.