Unix Timestamp & Epoch Converter
Convert Unix epoch timestamps to human-readable UTC/local dates, relative time, and convert dates back to seconds/ms.
| ISO 8601 (UTC) | 2026-10-17T17:10:21.000Z | |
| Local Time | Sat Oct 17 2026 22:40:21 GMT+0530 (India Standard Time) | |
| RFC 2822 | Sat, 17 Oct 2026 17:10:21 GMT | |
| Relative Time | in 0 seconds | |
| Day of the Week | Saturday | |
| Day of the Year | Day 290 of 2026 |
How to Use Unix Timestamp & Epoch Converter
1. Select Reference Date or Time
Pick your calendar dates, enter timestamps, or set your target countdown duration.
2. Instant Chronological Calculation
Calculates time differences, timezone conversions, or formatted dates using standard time protocols.
3. Copy Formatted Result
Copy the standardized date string, duration breakdown, or scheduled event with one click.
How This Utility Works
A high-precision real-time Unix timestamp and Epoch converter. Features a live ticking clock in seconds and milliseconds, auto-detects 10-digit vs 13-digit epoch values, outputs ISO 8601, RFC 2822, and relative time offsets, and provides bidirectional datetime to epoch calculation.
Timezone projections and Unix epoch calculations run against your local device clock and internationalization tables without network polling.
Frequently Asked Questions
What is a Unix epoch timestamp?
Unix time represents the number of seconds that have elapsed since January 1, 1970 00:00:00 UTC (the Unix epoch), widely used across databases, operating systems, and APIs.
Does this converter support both seconds and milliseconds?
Yes! It features an auto-detection engine that distinguishes between 10-digit Unix seconds and 13-digit JavaScript milliseconds.
What happens in the Year 2038 problem?
Legacy 32-bit signed integers overflow on January 19, 2038. This converter uses modern 64-bit IEEE 754 numbers in JavaScript, supporting timestamps centuries into the future without issue.
Convert Unix Epoch Timestamps in Terminal
Run directly in your terminal without installing external heavy dependencies
$ date -d @1700000000 +"%Y-%m-%d %H:%M:%S UTC" -uConverts seconds timestamp to UTC human date on Linux. On macOS: date -r 1700000000 -u.
$ date +%sPrints the current system epoch timestamp in seconds.
Standardized Date & Time Formats
| Standard | Format Example | Description | Application |
|---|---|---|---|
| ISO 8601 | 2026-10-14T21:45:00Z | Universal UTC timestamp with Z indicator | REST APIs, JSON payloads, MongoDB |
| Unix Epoch (Sec) | 1791995100 | Seconds elapsed since 1970-01-01 | Database timestamps, JWT expiry (exp) |
| Unix Epoch (Ms) | 1791995100000 | Milliseconds elapsed since 1970-01-01 | JavaScript Date.now(), browser performance |
| RFC 2822 | Wed, 14 Oct 2026 21:45:00 GMT | Email and HTTP header date format | HTTP Last-Modified, SMTP headers |
| SQL Date | 2026-10-14 | Standard relational date column | PostgreSQL, MySQL, SQLite date fields |