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Unix Timestamp & Epoch Time Converter

Free online Unix Timestamp & Epoch Converter. Instantly convert Unix epoch seconds, milliseconds, or nanoseconds to human-readable UTC, ISO-8601, RFC-2822, and local timezone dates, or convert dates back to epoch.

About Unix Timestamp & Epoch Time Converter

Convert Unix epoch seconds, milliseconds, and nanoseconds to ISO 8601, UTC, and local timezones. All processing executes locally inside your browser session with zero server uploads or telemetry retention.

Key Developer Workflows & Capabilities — Epoch Converter

Convert 10-digit Unix seconds, 13-digit milliseconds, or 19-digit nanoseconds into UTC and local dates
Convert human-readable dates and ISO-8601 strings back into Unix epoch timestamps
View live ticking Unix epoch clock with one-click copy for API testing and database queries
Generate relative time offsets (+1 hour, +24 hours, +7 days, +30 days) for JWT exp and cache TTLs

Common Developer Searches & Supported Formats

epoch converter · unix timestamp to date · milliseconds to date converter · current unix timestamp · date to epoch converter · iso 8601 timestamp converter · unix time converter online

Frequently Asked Questions — Unix Timestamp & Epoch Time Converter

How do I know if my Unix timestamp is in seconds, milliseconds, or nanoseconds?

A 10-digit number (e.g., 1760866000) represents Unix seconds, a 13-digit number (e.g., 1760866000000) represents milliseconds (used by JavaScript Date.now() and Java), and a 19-digit number represents nanoseconds (used by Go and InfluxDB). Our converter auto-detects precision automatically.

What is the Unix epoch start date?

The Unix epoch is 00:00:00 UTC on January 1, 1970 (1970-01-01T00:00:00Z). Every Unix timestamp counts the elapsed seconds or milliseconds since that moment, excluding leap seconds.

What is the Year 2038 (Y2K38) problem for Unix timestamps?

Signed 32-bit integers overflow after 2,147,483,647 seconds (January 19, 2038 at 03:14:07 UTC). Modern 64-bit systems and PostgreSQL/JavaScript timestamps safely support dates billions of years into the future.

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