Convert Unix timestamps
Switch between Unix time and readable date values for APIs, logs, and databases.
Conversion mode
Convert Unix timestamps to ISO dates, or dates back to Unix time.
Conversion output
Output appears here.
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Why this tool exists
Timestamp Converter helps you switch between Unix epoch values and human-readable date formats.
It is useful when inspecting logs, API payloads, database rows, and scheduled event times.
Common use cases
- Decode Unix timestamps in backend logs.
- Convert release/event dates to Unix seconds for API payloads.
- Validate timestamp units (seconds vs milliseconds).
Example input / output
Unix to ISO
Input
Output
Date to Unix
Input
Output
Common errors
Error: invalid Unix timestamp.
Cause: Input includes non-numeric characters or impossible value.
Fix: Use only numeric Unix timestamp values.
Error: invalid date input.
Cause: Date string format cannot be parsed by browser Date parser.
Fix: Use ISO format like 2026-05-04T20:00:00Z.
Related guides
Avoid common date bugs when moving between logs, APIs, and user-facing times.
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Frequently asked questions
Does this support both seconds and milliseconds?
Yes. Unix input is auto-detected as seconds or milliseconds based on length.
Which date format is returned?
Unix conversion outputs ISO 8601 UTC timestamps for clarity and consistency.