Unix Timestamp Converter | Timestamp to Date, Date to Timestamp, Millisecond Timestamp Conversion

📌 Tool Overview

Unix timestamp (Epoch time) is the number of seconds (or milliseconds) that have elapsed since 00:00:00 UTC on January 1, 1970. This professional online tool supports complete Unix timestamp parsing, seconds/milliseconds timestamp conversion, and bidirectional conversion between timestamps and standard date/time.

• Supports seconds (10-digit) and milliseconds (13-digit) Unix timestamp conversion
• Timestamp to date: Accurate conversion to local time and UTC time
• Date to timestamp: Multi-timezone support, output seconds or milliseconds timestamps
• Real-time display of current seconds and milliseconds Unix timestamps
• One-click copy for all conversion results
• Completely free to use online, no installation or registration required

⚙️ Conversion Principles

Milliseconds Timestamp = Seconds Timestamp × 1000

Seconds Timestamp = Milliseconds Timestamp ÷ 1000

Local Time = UTC Time + Timezone Offset (e.g., UTC+8 = UTC Time + 8 hours)

• Seconds Unix Timestamp: 10-digit number, unit in seconds, e.g., 1735689600
• Milliseconds Unix Timestamp: 13-digit number, unit in milliseconds, e.g., 1735689600000
• UTC Time: Coordinated Universal Time, the world time standard
• Timezone: The world is divided into 24 time zones, China uses UTC+8 (Eastern Time Zone)

📝 How to Use

1. Timestamp → Date: Enter a 10-digit (seconds) or 13-digit (milliseconds) Unix timestamp in the left panel, select the corresponding unit, and click "Convert to Date/Time" to complete timestamp parsing
2. Date → Timestamp: In the right panel, select date/time, choose timezone and output unit (seconds/milliseconds), then click "Convert to Unix Timestamp" to generate the corresponding timestamp
3. Copy Results: All conversion results support copy functionality - click the copy icon next to any result
4. View Current Timestamp: The top of the page displays current seconds and milliseconds Unix timestamps in real-time

❓ Frequently Asked Questions

• Q: Why are the conversion results different from what I expected?
  A: Please check if the timezone setting and timestamp unit (seconds/milliseconds) are correct
• Q: What's the difference between 10-digit and 13-digit Unix timestamps?
  A: 10-digit represents seconds, 13-digit represents milliseconds. You need to select the corresponding unit when converting
• Q: What is the valid range for Unix timestamps?
  A: Typically supports dates after January 1, 1970. The supported range may vary slightly between different programming languages
• Q: What is the default timezone?
  A: The default timezone is UTC, and the default output unit is seconds. For milliseconds timestamp conversion, you can manually switch the unit