← Blogby Marcell Almeida

How to parse and format ISO 8601 dates

Paste an ISO 8601 string — see local time, Unix timestamp, and normalized ISO output.

Logs and APIs use ISO 8601; humans read local time. The ISO 8601 Formatter parses Zulu and offset strings and shows equivalent Unix and local values.

Try it — paste or generate ISO 8601

Open full tool →

How it works

  1. Input — ISO 8601 string or click Now.
  2. ISO output — normalized canonical form.
  3. Conversions — local datetime and Unix seconds.

Timezone offsets

Strings with Z or +05:30 offsets parse correctly. Local display uses your browser timezone.

Unix timestamps

See also the Unix Timestamp Converter for epoch ↔ date workflows.

The How to parse and format ISO 8601 dates is free, runs locally, and never sends your data to a server. More converter tools at maratool.com.