Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and times, or convert dates back to Unix timestamps. Supports seconds and milliseconds. Shows ISO 8601, RFC 2822, and relative time. Free and browser-based.
Unix (seconds)
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Unix (milliseconds)
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ISO 8601
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RFC 2822
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Local Time
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Relative
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How to Convert Timestamps
- Enter a Unix timestamp — Type a Unix timestamp (seconds or milliseconds) into the left field, or click Now to use the current time.
- Or enter a date — Use the date picker on the right to pick a date and time to convert to a Unix timestamp.
- Copy any format — All formats are shown simultaneously. Click Copy next to any format to copy it to clipboard.
Features
- Convert timestamp to/from date
- Shows Unix seconds and milliseconds
- ISO 8601 and RFC 2822 formats
- Relative time (e.g. "3 hours ago")
- Auto-detects seconds vs milliseconds
- Copy any format to clipboard
Unix Timestamp Converter: practical uses
Use Unix Timestamp Converter when you need a fast, clear, private result without creating an account. This page also supports related needs like Unix Timestamp Converter online, Unix Timestamp Converter validator, Unix Timestamp Converter formatter so you can choose the right workflow.
When it helps
- Best for: Pasting code, structured data, tokens, hashes, or encoded text and getting a readable result quickly.
- Helpful details: Use the examples, validation messages, copy actions, and formatting options to catch mistakes before you ship.
- Next step: Open a related formatter, validator, encoder, parser, or converter when your workflow moves to another format.
For the next step, try JSON Formatter & Validator, Regex Tester & Log Extractor, Base64 Encoder & Decoder, Hash Generator.
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp is the number of seconds (or milliseconds) that have elapsed since January 1, 1970 00:00:00 UTC (the Unix epoch). It's used universally in programming and databases.
How do I know if a timestamp is in seconds or milliseconds?
Timestamps in seconds are typically 10 digits (e.g. 1716278400). Millisecond timestamps are 13 digits (e.g. 1716278400000). This tool auto-detects which format you're using.
What is ISO 8601?
ISO 8601 is an international standard for representing dates and times. Example: 2024-05-21T12:00:00.000Z. The Z at the end indicates UTC timezone.
What is the maximum Unix timestamp?
The maximum 32-bit Unix timestamp is 2,147,483,647 (January 19, 2038). This is the Year 2038 problem. Modern 64-bit systems can represent much larger timestamps.
How do I get the current Unix timestamp?
Click the Now button to instantly fill in the current Unix timestamp. In code: Date.now() gives milliseconds, Math.floor(Date.now()/1000) gives seconds.
