ChronosChronos
ChronosFormat Methods

toISOString

Returns a date as a string value in ISO format (UTC).

toISOString()

Returns a date as a string value in ISO format (UTC).

Signature

toISOString(): ISODateTimeString<'utc'>

Return Type

ISODateTimeString<'utc'> - Standard ISO 8601 string

Notes

  • Always returns UTC time
  • Consistent with native Date behavior

Example

playground.ts

Last updated: Wed, May 20, 2026 06:24:17PM (UTC)

fromNowShort

Formats the date as a relative time string (e.g., "5m ago", "in 2h") using locale-specific formatting.

toLocalISOString

Returns ISO time string in appropriate time zone with offset.

On this page

toISOString()SignatureReturn TypeNotesExample