ISO 8601 Date Format: UTC, Timestamps & JavaScript
See ISO 8601 date, time, UTC, offset, and timestamp formats, then format or parse them in JavaScript with native APIs and isoformat.
JavaScript & CSS date format
Convert Human-readable Duration Strings to Milliseconds
Convert timeout strings to milliseconds in JavaScript. Handles “2 days 5 hours” format. Perfect for cache TTLs and rate limits.
Human-friendly Relative Time Formatter – human-time
A zero-dependency JavaScript library that converts timestamps into human-readable formats like “just now” or “3 days ago” for modern apps.
Professional Date & Time Management in JavaScript – Chronos
A JavaScript library for date operations. Handle time zones, format dates, and perform calculations with a clean API. Built for reliability and ease of use.
Versatile JavaScript Date/Time Formatting Library – Tictic
A lightweight JavaScript library for customizable date and time formatting.
Format JavaScript Date Strings – format-date
format-date is a super tiny (~0.4kb) JavaScript library to format JavaScript date() strings using custom Date and Time patterns.
Parse And Format Datetime Strings Using PHP DateTime Formats
A tiny JavaScript DateTime manipulation library to parse and format DateTime strings using PHP Date and Time formats.
Lightweight Datetime Formatter In JavaScript – tinydate
tinydate is an extremely lightweight (0.3 kb minified) JavaScript library used for formatting date/time strings using pure JavaScript.