Online Stopwatch

Free Online Stopwatch! Counts milliseconds, seconds and minutes. Digital browser stop clock. It allows you to add laps, breaks and export stops as CSV.

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    Stopwatch Random Facts

    • Inventor of the first stopwatch was Samuel Watson, a horologist (clock and watch maker). He invented the first stopwatch in 1695 as a "Physician’s Pulse Watch" as a request from a surgeon.
    • Stopwatches triggered by humans have an error of 180 – 200 milliseconds, what a human brain needs to respond to visual stimulus.
    • A chronograph is a combination from a stopwatch and a display watch.