Developer Utility

Unix Timestamp & Log Time Converter

Detect Unix seconds, milliseconds, microseconds, nanoseconds, ISO 8601 and Apache log times, then convert them to any IANA timezone.

Everything stays in your browser

Convert one timestamp

Paste a timestamp or date and press Enter.

Timestamp or date

Examples:

Choose how timezone-free input is interpreted and where results are displayed.

When the input has no timezone

Output IANA timezone

Year for yearless syslog entries (optional)

Numeric values inside logs

Supported formats
10, 13, 16 and 19-digit Unix timestamps, ISO 8601, Java, RFC 2822, Apache/Nginx, syslog and YYYY-MM-DD HH:mm:ss.

Keep the original text and append the converted time after every detected timestamp.

Original log

Converted result

1. Paste a timeEnter one timestamp or paste a complete application log.

2. Choose a timezoneDefine timezone-free input and select an output timezone.

3. Copy the resultGet Unix, ISO, UTC, local time or an annotated log.

Backend and API debugging

Understand epoch values returned by databases, JWTs and APIs.

Cross-region log analysis

Convert UTC and Apache logs into your team's timezone.

Format verification

Compare seconds, milliseconds and ISO 8601 to catch unit mistakes.

Is a Unix timestamp in seconds or milliseconds?

What happens when a date has no timezone?

Are my logs uploaded?