Timestamp Converter

Convert between Unix timestamps and human-readable dates. Support for milliseconds and multiple time zones.

Current Time

Unix Timestamp (seconds)
1,769,453,151
Unix Timestamp (milliseconds)
1,769,453,151,814
Current Date & Time
Monday, January 26, 2026 at 06:45:51 PM

Timestamp to Date

Local Time
-
UTC Time
-
ISO 8601
-
Relative
-
Day of Week
-

Date to Timestamp

Unix (seconds)
1,769,453,100
Unix (milliseconds)
1,769,453,100,000
ISO 8601
2026-01-26T18:45:00.000Z

About Unix Timestamps

• Seconds: Standard Unix timestamp (seconds since Jan 1, 1970 00:00:00 UTC)

• Milliseconds: JavaScript-style timestamp (includes milliseconds)

• ISO 8601: International standard date format (YYYY-MM-DDTHH:MM:SS.sssZ)

• Auto-detection: Tool automatically detects if input is in seconds or milliseconds

What It Does

Timestamp Converter converts between Unix timestamps (epoch time) and human-readable dates and times. Unix timestamps represent time as the number of seconds (or milliseconds) since January 1, 1970, 00:00:00 UTC (the Unix epoch). This tool displays the current timestamp, converts timestamps to readable dates, converts dates to timestamps, supports both seconds and milliseconds formats, handles multiple time zones, and shows time differences. It's essential for developers working with databases, APIs, log files, scheduling systems, and any application that stores or processes time-based data. The converter handles historical dates, future dates, and provides time zone conversions for accurate time representation.

Key Features:

  • Current timestamp display: See live Unix timestamp in seconds and milliseconds
  • Timestamp to date: Convert Unix timestamps to human-readable dates
  • Date to timestamp: Convert any date/time to Unix timestamp
  • Seconds and milliseconds: Support for both timestamp formats
  • Time zone conversion: Display times in UTC and local time zones
  • Historical dates: Convert timestamps from any point in history
  • Future dates: Calculate timestamps for future dates
  • Time difference calculator: Show time elapsed or remaining

How To Use

View the current timestamp or convert between Unix timestamps and readable dates. Perfect for debugging time-based code, analyzing logs, or working with APIs.

1

View Current Timestamp

The tool automatically displays the current Unix timestamp in both seconds and milliseconds format at the top. This updates in real-time and shows the exact moment you're viewing the page.

2

Convert Timestamp to Date

Enter a Unix timestamp (in seconds or milliseconds) in the input field. Select whether your timestamp is in seconds or milliseconds format. Click "Convert to Date" to see the human-readable date and time in both UTC and your local time zone.

3

Convert Date to Timestamp

Enter a date and time using the date/time picker or type it manually. Select your time zone. Click "Convert to Timestamp" to get the Unix timestamp equivalent in both seconds and milliseconds format.

4

Use Results

Copy the converted timestamp or date for use in your code, database queries, API requests, or log analysis. The tool shows both formats (seconds and milliseconds) for maximum compatibility.

Pro Tips

  • •Unix timestamps are always in UTC—time zone conversion happens when displaying
  • •Milliseconds timestamps are 13 digits, seconds timestamps are 10 digits
  • •JavaScript uses milliseconds, Unix command line uses seconds
  • •Negative timestamps represent dates before 1970
  • •Year 2038 problem: 32-bit systems can't handle timestamps after January 19, 2038
  • •Use milliseconds for JavaScript Date objects and most modern APIs

Benefits

Database Queries: Convert timestamps in SQL queries to readable dates
API Development: Understand and debug timestamp formats in API responses
Log Analysis: Convert log file timestamps to readable times
Scheduling: Calculate timestamps for future events and reminders
Debugging: Verify timestamp calculations in your code
Data Migration: Convert timestamps between systems and formats
Time Zone Handling: Understand how timestamps relate to different time zones

Use Cases

Database Timestamp Queries

Convert Unix timestamps stored in databases to readable dates for queries and reports. Example: Timestamp 1704067200 converts to "2024-01-01 00:00:00 UTC". Use in SQL: SELECT FROM_UNIXTIME(1704067200) in MySQL, or TO_TIMESTAMP(1704067200) in PostgreSQL. Also convert readable dates to timestamps for WHERE clauses: WHERE created_at > UNIX_TIMESTAMP('2024-01-01'). Essential for filtering records by date ranges, generating reports, and understanding database time storage.

Timestamp: 1704067200 → Date: January 1, 2024, 12:00:00 AM UTC

API Timestamp Handling

Convert timestamps in API responses to readable dates for display or debugging. Many APIs return Unix timestamps (seconds or milliseconds). Example: API returns {"created_at": 1704067200000} (milliseconds). Convert to readable: "January 1, 2024, 12:00:00 AM UTC". Also convert user-submitted dates to timestamps for API requests. JavaScript: new Date(1704067200000).toISOString() or Date.parse("2024-01-01"). Essential for API integration, data display, and debugging API time-related issues.

API timestamp: 1704067200000 → Display: "Jan 1, 2024, 12:00 AM"

Log File Analysis

Convert timestamps in log files to readable dates for troubleshooting. Log files often contain Unix timestamps. Example: Log entry "1704067200 ERROR: Connection failed". Convert timestamp to see: "2024-01-01 00:00:00 UTC - ERROR: Connection failed". Helps identify when errors occurred, correlate events across different log files, and understand system behavior over time. Essential for debugging production issues and analyzing system performance.

Log: "1704067200 [ERROR]" → "Jan 1, 2024 00:00:00 [ERROR]"

Scheduling and Reminders

Calculate timestamps for future events, reminders, and scheduled tasks. Example: Want to schedule a task for "January 15, 2024, 3:00 PM". Convert to timestamp: 1705334400 (seconds) or 1705334400000 (milliseconds). Use in cron jobs, task schedulers, or reminder systems. Also calculate time differences: "How many seconds until New Year?" Convert both dates to timestamps and subtract. Essential for building scheduling features, countdown timers, and time-based automation.

Future date: "Jan 15, 2024 3:00 PM" → Timestamp: 1705334400

JavaScript Date Handling

Convert between JavaScript Date objects and Unix timestamps. JavaScript uses milliseconds since epoch. Example: new Date().getTime() returns 1704067200000 (milliseconds). To convert to seconds: Math.floor(Date.now() / 1000) = 1704067200. To create Date from timestamp: new Date(1704067200000). Essential for: storing dates in databases (often use seconds), working with APIs (may use either format), and displaying dates to users (convert to readable format).

JavaScript: Date.now() = 1704067200000 → Seconds: 1704067200

Frequently Asked Questions

1 What's the difference between seconds and milliseconds timestamps?
Seconds timestamps are 10 digits (e.g., 1704067200) representing seconds since Unix epoch. Milliseconds timestamps are 13 digits (e.g., 1704067200000) representing milliseconds since epoch. Milliseconds provide millisecond precision, while seconds provide only second precision. JavaScript Date objects use milliseconds (Date.now() returns milliseconds). Unix command line tools like date use seconds. Most modern APIs use milliseconds for better precision. To convert: milliseconds ÷ 1000 = seconds, seconds × 1000 = milliseconds. Always check your system's expected format to avoid off-by-1000 errors.
2 Why do timestamps use UTC instead of local time?
Unix timestamps are always in UTC (Coordinated Universal Time) to provide a universal, unambiguous time reference that doesn't depend on time zones or daylight saving time. UTC is the same worldwide—1704067200 represents the exact same moment everywhere, regardless of local time zone. When displaying timestamps, they're converted to local time zones for readability. This design prevents confusion: storing "3:00 PM EST" would be ambiguous (is it 3 PM in winter or summer? What about DST changes?). UTC timestamps are absolute and never change. Applications convert to local time only when displaying to users.
3 What is the Year 2038 problem?
The Year 2038 problem occurs on January 19, 2038 at 03:14:07 UTC when 32-bit signed integer timestamps overflow. The maximum 32-bit signed integer is 2,147,483,647 seconds, which equals this date. After this, timestamps wrap around to negative numbers (representing 1901). This affects systems using 32-bit time_t (older Unix systems, embedded devices, some databases). Solutions: Use 64-bit integers (supports dates until year 292,277,026,596), use milliseconds instead of seconds (delays problem), or use alternative time representations. Most modern systems (64-bit, JavaScript, modern databases) are unaffected. The converter handles this by supporting both 32-bit and 64-bit ranges.
4 Can I convert timestamps before 1970?
Yes, negative timestamps represent dates before January 1, 1970. For example, -86400 seconds = December 31, 1969, 00:00:00 UTC (one day before epoch). The converter handles negative timestamps and displays historical dates correctly. However, some systems and programming languages have limitations: 32-bit signed integers can only represent dates from 1901 to 2038, JavaScript Date objects support dates from approximately year -271,821 to 275,760, and some databases may have minimum date limits. Always verify your system's date range support when working with very old or very future dates.
5 How do I handle time zones with timestamps?
Unix timestamps are always UTC, so time zone handling happens when converting to/from readable dates. When converting timestamp to date: The converter shows both UTC and local time zone. When converting date to timestamp: Specify the time zone of your input date—the converter converts it to UTC before calculating the timestamp. Best practices: Store timestamps in UTC in databases, convert to user's local time zone only when displaying, use time zone libraries (moment.js, date-fns) for accurate conversions, and be aware of daylight saving time transitions (some hours don't exist or repeat). The converter automatically handles DST based on the date.

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