Why Use This Tool
Epoch timestamps are compact and timezone-independent but unreadable. When debugging logs, APIs, or JWTs, you need to convert these numbers to understand when events actually occurred.
Epoch Converter
Free online epoch converter. Convert Unix timestamps to dates and dates to epoch time. Live clock, auto-detects seconds vs milliseconds. — runs 100% in your browser, client-side only. No data is sent to any server. Free to use, no account required.
Free
Client-Side
No Login
No Storage
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How to Use the Epoch Converter
- Use Epoch → Date to convert a Unix timestamp to a human-readable date.
- Use Date → Epoch to enter day, month, year, hour, minute, second and get the epoch instantly.
- Auto-detects seconds vs. milliseconds.
The live clock at the top shows the current epoch in real time.
What is Epoch Converter?
An epoch converter transforms Unix timestamps (seconds since Jan 1, 1970) to human-readable dates and vice versa. It handles both seconds and milliseconds formats and shows times in multiple timezones.
When to Use It
Use epoch conversion when debugging timestamps in logs or APIs, calculating JWT expiry times, working with database timestamp columns, or converting between date formats.
Common Uses
- Debugging timestamps in API responses
- Understanding JWT exp/iat claims
- Converting database timestamp values
Frequently Asked Questions
Seconds vs milliseconds?
Unix timestamps are traditionally seconds (10 digits). JavaScript uses milliseconds (13 digits). Divide by 1000 to convert ms to seconds.
What timezone are epochs in?
Epoch timestamps are always UTC — they represent absolute moments in time. Convert to local timezone only when displaying to users.
What's the Year 2038 problem?
32-bit signed integers storing seconds overflow on Jan 19, 2038. Modern 64-bit systems are unaffected; the problem impacts legacy 32-bit systems.