Unix Timestamp Validator for Seconds and Millis

Unix Timestamp Validator

Validate epoch timestamps and identify whether they’re seconds or milliseconds. This helps avoid unit mistakes when working with logs and APIs.

How to use the Unix Timestamp Validator

1. Paste a timestamp value.
2. Click Validate.
3. Review the validity and converted date.

Common use cases

• Checking API inputs for correct units.
• Debugging log timestamps.
• Validating data imports.
• Converting timestamps for reports.

Tips & notes

• Seconds are typically 10 digits; milliseconds are 13.
• Always confirm the time zone of the output.
• Use the batch converter for lists.

Related time tools

• Timestamp to Date
• Date to Timestamp Converter
• Unix Timestamp Batch Converter