What is Timestamp Converter?

Timestamp Converter translates between Unix timestamps and human-readable dates. Convert seconds or milliseconds since epoch to formatted dates, or convert any date to its Unix timestamp. Handy when debugging API responses or reading database logs.

The converter accepts both 10-digit (seconds) and 13-digit (millisecond) inputs and shows the result in UTC plus your local timezone with the current offset. There's a live clock counting the current epoch each second, so you can copy a fresh timestamp without opening a terminal.

How to use

1. Enter a Unix timestamp (seconds or milliseconds) to see the human-readable date, or enter a date to get the timestamp.
2. Toggle between seconds and milliseconds precision. View results in UTC and your local timezone.
3. Copy the converted value or view the current timestamp in real time.

When to use

• Reading log entries where times are stored as raw Unix integers instead of dates.
• Building API tests that need an `exp` field for JWTs or signed URLs.
• Sanity-checking that a date column in your database is in seconds, not milliseconds.

Result

A developer debugging an API response converts timestamp 1710432000 to see it represents March 14, 2024 at 16:00:00 UTC.

FAQ

Is my timestamp in seconds or milliseconds?

A modern timestamp in seconds has 10 digits (around 1.7 billion as of 2026). Add three zeros for the millisecond version, giving 13 digits. If your number is 13 digits long, switch the unit toggle to ms.

Why does the converted date look an hour off?

Unix timestamps are always UTC. The local time row shows your machine's timezone, which may include daylight-saving offsets. Compare the UTC row against the local row to see the gap your timezone is applying.

What's the largest timestamp I can convert?

JavaScript safely handles dates between roughly 271,821 BC and 275,760 AD. In practice you'll only hit issues past the year 2038 if your backend stores timestamps as 32-bit signed integers (the Y2038 problem).

Does the timestamp change if I'm in a different country?

No. The Unix epoch is a single fixed instant counted from 1 January 1970 UTC. A timestamp of 1710432000 means the same moment everywhere on Earth; only the human-readable rendering changes per timezone.

Can I paste an ISO 8601 date and get the timestamp back?

Yes. The date field accepts a standard date and time value, and the tool returns the matching seconds or milliseconds depending on the unit toggle. Handy for turning a `2026-03-14T16:00:00Z` value into the integer your backend expects.

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