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Unix Timestamp Converter

Convert Unix timestamps to human-readable dates in any timezone — or convert dates back to Unix. Live clock, world clock, relative time, and 9 output formats. 100% in-browser.

100% in-browserUnix ↔ DateWorld clockNo signup

Current time — UTC

05:32:27Sat, Apr 11, 2026

Unix: 1775885547

Convert

Enter a Unix timestamp or pick a date above

The Unix Timestamp Tool Every Developer Bookmarks

You are debugging a log file and see 1704067200. You are reading an API response with a created_at field in epoch milliseconds. You are setting an expiry on a JWT token and need the timestamp for exactly 24 hours from now. In every case, you reach for the same tool: a Unix timestamp converter.

This one shows the current Unix time as a live clock, converts in both directions (Unix → date and date → Unix), auto-detects seconds vs milliseconds, outputs 9 formats at once — ISO 8601, UTC string, relative time, local date, day of year — and displays the same moment across 14 world timezones. No page reload. No server round-trips. Just fast answers.

How it works

Instant Conversion in Both Directions

01

View the live clock

The current Unix timestamp updates every second at the top. Click "Copy" to grab it anytime.

02

Pick conversion direction

Choose "Unix → Date" to decode a timestamp, or "Date → Unix" to convert a human-readable date to epoch time.

03

Enter your value

Paste a Unix timestamp (seconds or ms auto-detected) or pick a date with the date picker. Hit "Use now" to use the current time.

04

Copy any output format

Every output row has its own copy button — ISO 8601, UTC string, relative time, local date, and 14 world timezone clocks.

Use cases

When Developers Need a Timestamp Converter

🪵

Log File Debugging

Decode epoch timestamps in server logs, Kubernetes events, and database query logs to understand exactly when something happened.

🔑

JWT Expiry Debugging

Decode the exp and iat claims from JWT tokens (Unix seconds) to check if a token is expired or when it was issued.

📡

API Response Parsing

Decode created_at, updated_at, and expires_at fields from REST and GraphQL API responses during integration.

⏰

Scheduled Jobs

Calculate the exact Unix timestamp for a future cron job, scheduled task, or cache TTL expiry.

🌍

Cross-timezone Coordination

Convert a deployment or incident time to every team member's local timezone for post-mortems or scheduling.

🗄️

Database Timestamps

Decode Unix timestamps stored in MySQL, PostgreSQL, MongoDB, or Redis to understand when records were created or modified.

FAQ

Frequently Asked Questions

1What is a Unix timestamp?
A Unix timestamp is the number of seconds (or milliseconds) elapsed since January 1, 1970 00:00:00 UTC — the "Unix epoch". It is used universally in programming because it is timezone-independent and easy to compare, sort, and calculate with.
2What is the difference between Unix seconds and milliseconds?
Seconds timestamps are 10 digits (e.g. 1704067200). Millisecond timestamps are 13 digits (e.g. 1704067200000). JavaScript's Date.now() uses milliseconds. Most UNIX system APIs and databases use seconds. This tool auto-detects which you have entered.
3What is ISO 8601 format?
ISO 8601 is the international standard for date/time representation: YYYY-MM-DDTHH:MM:SS.mmmZ. The "Z" suffix means UTC. It is used by JSON APIs, HTML date inputs, and most modern programming languages.
4How do I get the current Unix timestamp in JavaScript?
Use Math.floor(Date.now() / 1000) for seconds, or Date.now() for milliseconds. In Python, use int(time.time()). In Go, use time.Now().Unix().
Learn more

Developer Guides

📖Working with Timestamps in APIs📖JWT Claims Deep Dive📖Timezone Best Practices for Backends📖Date Serialization in JSON

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