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Convert between timestamps and human-readable dates with real-time clock.

Current Timestamp

1762251962
seconds

Timestamp → Date Time

Date Time → Timestamp

What is a Timestamp?

A Unix timestamp is the number of seconds or milliseconds that have elapsed since the Unix epoch (00:00:00 UTC on January 1, 1970). It's a simple decimal integer representing time in a standardized way, widely used in computer systems, programming languages, and databases.

Seconds:1609459200→2021-01-01 00:00:00
Milliseconds:1609459200000→2021-01-01 00:00:00

Common Use Cases

Development

Record and process time in various programming languages for logging, data storage, API interactions, etc.

Databases

Store creation time, update time, expiration time and other time-related fields.

API Interfaces

Pass time information in RESTful APIs to ensure time consistency between different systems.

Log Analysis

Analyze time information in server logs and application logs for troubleshooting and performance analysis.

Seconds vs Milliseconds

Seconds (s)

  • 10 digits
  • Second-level precision
  • Common in Unix/Linux
  • Example: 1609459200

Milliseconds (ms)

  • 13 digits
  • Millisecond-level precision
  • Common in JavaScript
  • Example: 1609459200000

Timezone Information

Timezones are standard time systems used in different regions of the Earth. Timestamps are based on UTC (Coordinated Universal Time), but need to be converted according to timezone when displayed.

FAQ

Why do timestamps start from 1970?

January 1, 1970 was chosen as the Unix epoch, the reference point selected when Unix operating system was developed. This date has become the standard in computer systems.

How to distinguish seconds and milliseconds timestamps?

By the number of digits: 10 digits for seconds, 13 digits for milliseconds. For example: 1609459200 (seconds), 1609459200000 (milliseconds).

What are the advantages of timestamps?

Timestamps are simple numbers, easy to store and compare; not affected by timezones, avoiding complexity of timezone conversion; highly compatible across different programming languages and systems.