Date/Time Converter

Support Unix timestamp and date-time mutual conversion, ISO format conversion, real-time display of current timestamp, one-click copy

Timestamp Conversion

Current Timestamp (Seconds)
0

More Formats

ISO Format —
UTC Time —
Chinese Format —

Features

  • Real-time Timestamp: Display current Unix timestamp in real-time, one-click refresh to get the latest value
  • Bidirectional Conversion: Support timestamp to date and date to timestamp, two-way conversion
  • One-click Copy: Each format has a copy button for quick pasting
  • Multiple Formats: Provide ISO, UTC, Chinese format and other common time formats
  • Instant Conversion: Convert as you type, millisecond response, no waiting required
  • Cross-platform Compatibility: Support PC, tablet, mobile and other devices, no installation required

How to Use

1

Select Conversion Direction

This tool supports bidirectional conversion: enter a timestamp to auto-convert to date, or select a date to auto-convert to timestamp. Choose the input method as needed.

2

Enter Time Value

Enter a 10-digit second-level timestamp in the timestamp input box, or select a specific date and time in the date picker. The tool will perform bidirectional conversion in real-time.

3

Copy Results

Conversion results include multiple formats. Click the copy button next to the format to copy to clipboard. Supports ISO format, UTC time, Chinese format, etc.

Use Cases

Development

View timestamps returned by APIs during development debugging, convert to readable dates

Data Analysis

Format conversion of time fields in log analysis and data reports

Database

Query and conversion of timestamp fields stored in databases

Troubleshooting

Quickly locate time points and log positions during online troubleshooting

API Integration

Handle different time formats when integrating with third-party systems

Documentation

Mutual conversion between timestamp and date formats in technical documentation

About Timestamps

A timestamp is a common way to represent time in computers, usually referring to Unix timestamp, the number of seconds elapsed since January 1, 1970 00:00:00 UTC.

What is a Unix Timestamp?

A Unix timestamp is the total number of seconds (or milliseconds) from January 1, 1970 00:00:00 UTC to the present. It is a standard way to represent time in computers, unaffected by time zones, convenient for storage and calculation.

Second vs Millisecond Timestamps

Second-level timestamps are 10 digits, accurate to seconds; millisecond-level timestamps are 13 digits, accurate to milliseconds. Date.now() in JavaScript returns ms, while many backend languages (e.g. PHP time()) return seconds. This tool uses second-level timestamps by default.

What is ISO 8601 Format?

ISO 8601 is the ISO standard for date and time representation, format like 2024-06-01T12:00:00Z, where T separates date and time, Z indicates UTC. It is widely used on the internet, common in JSON and APIs.

FAQ

Q: Is the timestamp converter free?
A: Completely free, no registration required, no usage limits. Just open the webpage and use it. All conversions are done locally in your browser, not uploaded to servers, protecting your privacy and security.
Q: Why do timestamps start from 1970?
A: This is a Unix operating system convention. January 1, 1970 00:00:00 UTC was chosen as the Unix Epoch, the starting point for time calculation. It is a historical convention with no special scientific meaning.
Q: What is the Year 2038 Problem?
A: The Year 2038 Problem is when the 32-bit signed integer Unix timestamp reaches its maximum (2^31-1) at 03:14:07 UTC on Jan 19, 2038, then overflows to negative, potentially causing failures. 64-bit systems have mostly solved this.
Q: How to get the current timestamp?
A: This tool shows the current timestamp in real-time at the top. In JavaScript use Date.now() for ms, Math.floor(Date.now()/1000) for seconds. Other languages: Python int(time.time()), PHP time(), Java System.currentTimeMillis().
Q: Are timestamps related to time zones?
A: Unix timestamps are timezone-independent - they represent seconds since UTC 1970-01-01 00:00:00, same worldwide. But converting to a date string shows different times based on local timezone.
Q: What are UTC and GMT?
A: UTC (Coordinated Universal Time) is an international time standard based on atomic clocks, very precise. GMT (Greenwich Mean Time) is local time at Greenwich Observatory, UK. For daily life they are essentially the same, differing by under 1 second.
Q: Does it support millisecond timestamp conversion?
A: This tool primarily uses second-level timestamps. If yours is millisecond-level (13 digits), divide by 1000 to convert to seconds first.
Q: Will data be uploaded during conversion?
A: No. All time conversions are done locally in your browser using JavaScript, not uploaded to any servers, nor recorded. No data you enter leaves your device.

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