Unix Timestamp Converter
Free online Unix timestamp converter to convert between epoch timestamps and human-readable dates in ISO, UTC, and local formats.
Timestamp → Date
Date → Timestamp
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Use Unix Timestamp Converter while building with AI coding assistants, agents, and LLM workflows: validate generated output, transform payloads, debug integrations, and prepare reliable inputs without leaving your browser.
What Is a Unix Timestamp?
A Unix timestamp (also called epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC—a reference point known as the Unix epoch. It is the most universal way to represent a specific moment in time across programming languages, databases, APIs, and operating systems. This tool converts Unix timestamps to human-readable dates and vice versa, supporting both seconds and milliseconds precision.
How to Use the Unix Timestamp Converter
- Enter a Unix timestamp in the 'Unix Timestamp' field to convert it to a date.
- Select whether the timestamp is in seconds or milliseconds.
- Click 'Now' to populate the current Unix timestamp.
- View the converted date in ISO 8601, UTC, local, and relative time formats.
- To convert a date to a timestamp, enter a date string (e.g., '2024-01-01T00:00:00Z') in the 'Date String' field.
- Copy any result using the copy button next to each value.
Common Use Cases
- API Debugging — Convert timestamps from API responses or JWT tokens into readable dates to verify expiration times, created-at fields, and event timing.
- Database Queries — Translate between epoch values stored in databases and human-readable dates when writing or debugging queries.
- Log Analysis — Convert epoch timestamps found in application or system logs into local time to correlate events and diagnose issues.
- Cross-Timezone Coordination — Use Unix timestamps as a timezone-neutral reference point when coordinating events or deadlines across distributed teams.