# Date Formatter

> Format any date in ISO, US, EU, long, short, time, Unix, RFC 2822, and ISO week formats. Also converts Unix timestamps.

URL: https://uttir.com/date-formatter
Categories: date-time-tools
Privacy: All formatting happens in your browser. No data leaves your device.

## About

Pick a date and see it formatted in eight common ways at once. Useful for picking the right format for a CSV export, an API payload, a log line, or a UI display. The ISO week format (2026-W03) is a standard in project management and finance.

You can also paste a Unix timestamp in seconds and see the same eight formats. The tool uses the browser's locale for the human-readable forms, so "long" and "short" reflect the user's language.

## How to use

1. **Pick a date** — Use the date/time picker, or paste a Unix timestamp in seconds.
2. **Read the formats** — All eight formats update live.

## Examples

### A modern ISO timestamp

The format most APIs use.

Output:

```
2026-01-15T12:34:56.000Z
```

### A human-readable date

For a UI or report.

Output:

```
Thursday, January 15, 2026
```

## FAQ

### What is the ISO week format?

The ISO 8601 week date format combines the year and the week number (1–53) with a W separator. For example, 2026-W03 is the third week of 2026. It is the standard in project management, finance, and most international business contexts.

### Is this in my time zone or UTC?

It depends on the format. ISO, RFC 2822, and Unix are in UTC. The long, short, and time formats are in your local time zone (the one set in your OS).

### What is ISO 8601?

The international standard for date and time: YYYY-MM-DD for dates, HH:MM:SS for times, and combined with a T separator (2026-08-21T14:30:00Z). Time zones use Z for UTC or +HH:MM offset.

### Which time zones are supported?

Every IANA time zone identifier (about 400), including UTC, America/Los_Angeles, Europe/London, Asia/Tokyo, etc. The list is loaded from your browser, so the exact set depends on your platform.

## Related tools

- [Unix Timestamp Converter](https://uttir.com/unix-timestamp-converter) — Convert Unix timestamps to readable dates and back, with a live current-time readout.
- [Date Calculator](https://uttir.com/date-calculator) — Count the days between two dates, or add and subtract days from any date.
- [Date Add/Subtract Calculator](https://uttir.com/date-add-subtract) — Add or subtract days, weeks, months, or years from any date. Handles month-end and leap-year rollovers.

---

For the full HTML page with the live tool, visit https://uttir.com/date-formatter.
This file is the markdown rendering at https://uttir.com/date-formatter.md. See https://uttir.com/llms.txt for a site-wide summary.