A timestamp (Unix Timestamp) is the total number of seconds from 1970-01-01 00:00:00 UTC to the present, also known as Unix epoch time. It is the standard way to represent time in computer systems, widely used in database storage, API interfaces, and log records.

What is the difference between seconds and milliseconds timestamps?

Seconds timestamps are 10-digit numbers representing seconds since the Unix epoch; milliseconds timestamps are 13-digit numbers representing milliseconds since the Unix epoch. JavaScript's Date.getTime() returns milliseconds timestamps, while most backend languages (like Python, PHP) use seconds timestamps by default.

Are timestamps related to time zones?

Timestamps themselves are UTC time and are timezone-independent. The same timestamp will display different local times in different time zones. For example, timestamp 0 is 1970-01-01 00:00:00 in UTC, but 1970-01-01 08:00:00 in Beijing time (UTC+8).

How to tell if a timestamp is in seconds or milliseconds?

You can usually tell by the number of digits: 10 digits = seconds, 13 digits = milliseconds. The current seconds timestamp is about 1.7 billion (10 digits), and milliseconds is about 17 trillion (13 digits). This tool supports auto-detection to intelligently identify the timestamp type.

What is the Year 2038 problem?

The Year 2038 problem is that in 32-bit systems, seconds timestamps will overflow (exceed 2^31-1) on January 19, 2038. 64-bit systems are not affected. Modern systems have largely adopted 64-bit timestamps, so this issue is no longer a practical threat.

Timestamp Converter

Timestamp and date conversion

Current Time: 1970/01/01 08:00:00 | Seconds Timestamp: 0 | Milliseconds Timestamp: 0

Timestamp to Date

Current timestamp: 0 (seconds) | 0 (milliseconds)

Date to Timestamp

Current time: 1970/01/01 08:00:00

Quick Actions

📖 Timestamp Tool Guide

🔧 Key Features

Timestamp to Date - Convert timestamps to readable date/time
Date to Timestamp - Convert date/time to timestamps
Auto Detect - Smart recognition of seconds and milliseconds timestamps
Quick Actions - One-click copy of current timestamp and date

💡 Use Cases

Time handling in API development
Log analysis and timestamp conversion
Database time field processing
Frontend/backend time data exchange

⚡ Tips

Supports seconds (10-digit) and milliseconds (13-digit) timestamps
Auto-detect smartly identifies timestamp type
One-click use of current timestamp or date
All operations done locally to protect privacy

📝 Timestamp Knowledge

Seconds Timestamp - 10-digit number, seconds since 1970-01-01
Milliseconds Timestamp - 13-digit number, milliseconds since 1970-01-01
Unix Timestamp - Usually refers to seconds timestamps
JavaScript Timestamp - Usually refers to milliseconds timestamps