sindresorhus/pretty-ms

Health v2 · maintenance only

Adoption not part of the score

1215 stars · 69 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A small JavaScript library that converts milliseconds into human-readable duration strings like '15d 11h 23m 20s'. It supports options for compact, verbose, and colon notation output, and works with numbers and BigInt.

Use cases

• format milliseconds as human readable duration
• display elapsed time in logs or CLI output
• show time durations in a UI
• convert ms to compact time string
• format durations in colon notation like a stopwatch
• humanize hrtime benchmark results

When to choose

• you need to display durations in a readable format in JavaScript or Node.js
• you want a tiny, dependency-free utility with flexible formatting options
• you need BigInt or sub-millisecond precision support

When to avoid

• you need to parse duration strings into milliseconds (use parse-duration-ms instead)
• you need timezone-aware or calendar date formatting
• you work outside the JavaScript ecosystem

Facets

library · maturity stable

serialization date-time developer-tools developer-tools web-development cross-platform npm-package humanize duration-formatting milliseconds time-formatting command-line nodejs javascript

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