Unix Timestamp Converter

Convert Unix timestamps and human-readable dates both ways.

Runs in your browser — nothing is uploaded.

How to use this tool

1. Read the live Unix seconds and milliseconds clocks, or paste a timestamp.
2. Convert timestamp → datetime or datetime → timestamp. Auto-detects seconds vs milliseconds.
3. Switch Local / UTC when logs and servers disagree on timezone.

Good to know

• Values around 10 digits are usually seconds; 13 digits are usually milliseconds.
• Copy ISO when you need a timezone-unambiguous string for APIs.

Conversion is local. Useful when debugging JWT exp, log lines, or generated created_at fields.

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