Milliseconds to time
Paste a duration in milliseconds — the kind you get from a log line, a
performance benchmark, or Date.now() subtraction — and see it broken down into
days, hours, minutes, seconds and milliseconds, plus a tidy
HH:MM:SS.mmm clock string.
A human-readable summary like “1d 1h 1m 1s 500ms” appears at the top for quick reading. All calculation happens in your browser; nothing is uploaded.