Date ISO Formatter
Type any date string and convert it instantly to ISO 8601 format — plus UTC, local time, Unix timestamp, and human-readable variants.
100% client-side · no upload
ISO 8601 (local)
ISO 8601 (UTC)
Date only
Unix timestamp (ms)
Human-readable
How to use
- Type or paste a date string into the input field in any common format.
- Click "Use current date & time" to pre-fill the current moment.
- Formatted results appear instantly: ISO 8601, UTC, date-only, Unix timestamp, and human-readable.
Related format tools
- Money Formatter — format amounts with currency symbols
- Scientific Notation Formatter — convert numbers to scientific notation
- Phone Number Formatter — format phone numbers
Preguntas frecuentes
- Is the date ISO formatter free?
- Yes, completely free with no signup and no usage limits.
- Does my data leave my device?
- No. All parsing and formatting runs in JavaScript inside your browser. Nothing is sent to any server.
- Does it work on mobile?
- Yes. The tool is mobile-first and works on iPhone Safari and Android Chrome.