Epoch Converter
Convert Unix timestamps to human-readable dates and back with live clock, timezone support, and ISO 8601 formatting
What is a Unix timestamp (epoch)?
A Unix timestamp (also called an epoch timestamp) is the number of seconds elapsed since January 1, 1970 00:00:00 UTC. It is the standard way computers store and transmit date/time values in APIs, databases, log files, and programming languages, because it is timezone-independent and can be compared with simple integer arithmetic.
This converter translates between Unix timestamps and human-readable dates in any timezone. It also shows a live current timestamp and supports millisecond precision for APIs that use milliseconds instead of seconds.
How to use Epoch Converter
Enter a timestamp or date
Paste a Unix timestamp (seconds or milliseconds) to convert to a date, or enter a human-readable date to convert to a timestamp.
Select your timezone
Choose a timezone to display or input local times. The UTC value is always shown for reference.
Copy the result
Click Copy next to the value you need — timestamp, ISO 8601, or local date string.
Frequently asked questions
What is the Unix epoch?
The Unix epoch is January 1, 1970 at 00:00:00 UTC. All Unix timestamps are the count of seconds (or milliseconds) since this moment, regardless of timezone.
Does my timestamp use seconds or milliseconds?
Timestamps with 10 digits typically represent seconds (e.g., 1700000000). Timestamps with 13 digits typically represent milliseconds (e.g., 1700000000000). JavaScript's Date.now() returns milliseconds; most Unix system calls return seconds.
What is the Year 2038 problem?
32-bit signed integers can store timestamps up to 2,147,483,647 — which corresponds to January 19, 2038. Systems using 32-bit timestamps will overflow at that point. Modern 64-bit systems are not affected.
What is ISO 8601?
ISO 8601 is the international standard for date/time representation: 2024-01-15T14:30:00Z. The T separates date and time; Z means UTC. It is the recommended format for APIs and data interchange.