# Unix Timestamp Converter - Timestamp to Date Online

> Free online Unix timestamp converter: convert timestamps and dates, auto-detect seconds or milliseconds, and show local, UTC, ISO 8601 and relative time.

- URL: https://qilingtools.com/en/timestamp
- Category: Developer Tools (https://qilingtools.com/en/dev)
- Tags: [Converters](https://qilingtools.com/en/tags/convert), [Date & Time](https://qilingtools.com/en/tags/time), [Developer](https://qilingtools.com/en/tags/dev)
- Last updated: 2026-10-22
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

Convert between Unix timestamps and dates. Pasting a timestamp auto-detects seconds vs milliseconds and shows local time, UTC, ISO 8601 and a relative "time from now"; you can also pick a date to get its timestamp. The current timestamp ticks live at the top.

## How to use

1. Copy the live current timestamp at the top
2. Under Timestamp → Date, paste a timestamp (seconds or ms auto-detected)
3. Or under Date → Timestamp, pick a date and time to get seconds and ms

## Features

- Auto-detects seconds vs milliseconds
- Shows local, UTC, ISO 8601 and relative time at once
- Current timestamp refreshes every second
- One-click copy for every field

## FAQ

### How are seconds and milliseconds told apart?

Ten digits are usually seconds and thirteen are milliseconds; anything over eleven digits is treated as milliseconds.

### Which time zone is shown?

"Local time" uses your device's zone, alongside UTC and ISO 8601 for reference.

### Are my files or data uploaded?

No. Everything runs locally in your browser with no network upload, and is discarded when you close the page.

### Do I need to sign up or pay?

No. The site is completely free, needs no account and has no usage limits.

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