How do I convert Unix timestamp to date?

Paste the Unix timestamp into the converter. It auto-detects seconds and milliseconds, then renders a human-readable date and time.

Is Unix timestamp always UTC?

Yes. Unix timestamps always represent UTC time. Timezone only affects how the same instant is formatted for display.

What is the difference between 10-digit and 13-digit timestamps?

10-digit values are seconds since epoch, while 13-digit values are milliseconds. Many JavaScript APIs use milliseconds by default.

EpochConverter/unix-timestamp-to-date

Unix Timestamp to Date Converter

Convert Unix epoch timestamps into readable date and time formats in one step. Paste a timestamp from logs, API payloads, JWT claims, or database rows and instantly view the corresponding UTC and timezone-adjusted output.

Timezone

Timestamp → Date

Unix Timestamp

seconds2 years ago

Date

Thursday, February 22, 2024

Time

00:00:00

Day

Thursday

ISO 8601

2024-02-22T00:00:00.000Z

Timezone

UTC

How Unix timestamp to date conversion works

Unix time stores a single integer that counts elapsed time from January 1, 1970 at 00:00:00 UTC. To convert that number into a date, software maps the value to calendar components like year, month, day, and time-of-day. A 10-digit value normally represents seconds, while a 13-digit value represents milliseconds. This converter auto-detects the format so you can paste values directly without manual unit conversion.

Common debugging use cases

Engineers use timestamp conversion when validating token expiry, checking delayed events, and reconciling backend logs with frontend telemetry. If you receive an unexpected date, the most common issue is unit mismatch: seconds interpreted as milliseconds or the reverse. The second most common issue is timezone display confusion. Keep UTC as your source of truth, then switch timezone view only for user-facing checks.

Best practices for storing timestamps

Store timestamps as raw numeric values in UTC and convert to readable strings only at display time. This prevents locale parsing bugs and keeps arithmetic operations simple for expiration windows, SLA checks, and analytics queries. When your stack mixes JavaScript and backend services, explicitly document whether fields are seconds or milliseconds to avoid silent data errors.

Related timestamp tools

Milliseconds to date →Current timestamp →Live Unix time now →

Need reverse conversion? Open the full epoch converter.