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Unix Timestamp Converter Online - Unix Epoch

Multiple unix timestamp converter and datetime converter online, supports timestamps in seconds, milliseconds, and datetime in UTC, in local timezone

Unix timestamp converter
Multiple unix timestamp converter

Unix timestamp converter

timestamp to datetime

datetime to timestamp ( Format: year-month-day hour:minute:second )

Multiple unix timestamp converter

multiple timestamp => datetime (one per line)

input output

multiple datetime => to timestamp (one per line)

input output

What is unix epoch time?

Unix epoch time (also known as Unix time, Unix timestamp, POSIX time, seconds since the epoch) is a system for describing a point in time.
It is the number of seconds that have elapsed since the unix epoch, minus leap seconds; the unix epoch is 00:00:00 UTC on 1 January 1970 (an arbitrary date); leap seconds are ignored,with a leap second having the same unix time as the second before it, and every day is treated as if it contains exactly 86400 seconds. due to this treatment unix time is not a true representation of UTC.

Human Readable Time Seconds
1 Minute 60 Seconds
1 Hour 3600 Seconds
1 Day 86400 Seconds
1 Week 604800 Seconds
1 Year (365 Day) 31536000 Seconds

Some important unix epoch and dateTime

Unix Epoch Seconds Date Time
0 1970-01-01 00:00:00 UTC
946684800 2000-01-01 00:00:00 UTC
1735689600 2025-01-01 00:00:00 UTC
1756684800 2025-09-01 00:00:00 UTC
1758931200 2025-09-27 00:00:00 UTC
1758999600 2025-09-27 19:00:00 UTC
1759017600 2025-09-28 00:00:00 UTC
1767225600 2026-01-01 00:00:00 UTC
2147483647 2038-01-19 03:14:07 UTC

How to Use Unix Timestamp Converter

Our Unix timestamp converter is a versatile tool designed to help you convert between Unix timestamps and human-readable date formats. Below are step-by-step instructions for using the various features of this converter.

Converting Timestamp to Date

  1. Enter the Unix timestamp in the first input field (supports seconds or milliseconds)
  2. Select the appropriate unit (seconds or milliseconds)
  3. Choose your preferred timezone
  4. Click the "Convert" button to see the result in human-readable format

Converting Date to Timestamp

  1. Enter the date in YYYY-MM-DD HH:MM:SS format
  2. Select the timezone your date corresponds to
  3. Select your desired output unit (seconds or milliseconds)
  4. Click the "Convert" button to get the Unix timestamp

Batch Conversion

For multiple conversions, use our batch conversion tools. Simply enter one timestamp or date per line, select the appropriate options, and click "Convert" to process them all at once.

Frequently Asked Questions

What is a Unix timestamp?

A Unix timestamp represents the number of seconds that have elapsed since January 1, 1970, at 00:00:00 UTC (the Unix Epoch). It is a standardized way to represent a specific point in time regardless of timezone or locale.

Why do we use Unix timestamps?

Unix timestamps are widely used in programming and databases because they are efficient to store (as a single number), easy to compare, and independent of time zones and daylight saving time changes. They provide a universal reference for time across different systems.

What is the difference between seconds and milliseconds in Unix timestamps?

The standard Unix timestamp counts seconds since the Unix Epoch. However, for applications requiring greater precision, millisecond timestamps are used, which are 1000 times larger than the standard second-based timestamp (e.g., 1622505600000 instead of 1622505600).

How do I handle dates before 1970 (the Unix Epoch)?

Dates before January 1, 1970, are represented as negative Unix timestamps. For example, December 31, 1969, at 23:59:59 UTC would be -1 second from the Unix Epoch.

Will Unix timestamps ever run out?

The 32-bit Unix timestamp will overflow on January 19, 2038 (known as the "Year 2038 problem"). However, most modern systems use 64-bit timestamps, which will not overflow for billions of years.

Common Uses for Unix Timestamps

Unix timestamps are utilized across various applications and domains:

  • Database record timestamps and log entries
  • Scheduling and cron jobs in operating systems
  • File creation and modification times
  • Network protocol time synchronization
  • Tracking events in web analytics and user activity monitoring