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Unix Timestamp & Epoch Time Tools
Free Unix timestamp and epoch converter. Convert Unix timestamp to date, date to Unix timestamp, check the current Unix timestamp, and work with epoch seconds or milliseconds.
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)
multiple datetime => to timestamp (one per line)
UnixEpoch.net
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Fast, accurate timestamp and date conversion tools.
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 seconds or milliseconds?
Epoch: 1970-01-01 00:00:00 UTC. Seconds × 1000 = milliseconds. Timestamps do not contain a timezone; the examples below are UTC.
| Value | If seconds (UTC) | If milliseconds (UTC) |
|---|---|---|
| 0 | 1970-01-01 00:00:00 | 1970-01-01 00:00:00.000 |
| 1,000 | 1970-01-01 00:16:40 | 1970-01-01 00:00:01.000 |
| -1 | 1969-12-31 23:59:59 | 1969-12-31 23:59:59.999 |
| 1,704,067,200 | 2024-01-01 00:00:00 | 1970-01-20 17:21:07.200 |
Digit count is only a hint. JavaScript Date takes milliseconds. Unix/POSIX time does not count leap seconds. new Date(seconds * 1000) · RFC 3339: offsets and date formats
How to Use the Unix Timestamp Converter
Use this Unix timestamp converter to convert epoch to date, convert date to Unix timestamp, check current Unix time, and validate whether a value is a 10-digit seconds timestamp or a 13-digit milliseconds timestamp.
For dedicated workflows, use Epoch to Date Converter to convert epoch to time and convert Unix epoch to date. You can also use Date Format Converter for cross-format date and epoch conversion.
Unix Timestamp to Date Converter
- Enter the Unix timestamp in the first input field (supports seconds or milliseconds)
- Select the appropriate unit (seconds or milliseconds)
- Choose your preferred timezone
- Click the "Convert" button to see the result in human-readable format
Date to Unix Timestamp Converter
- Enter the date in YYYY-MM-DD HH:MM:SS format
- Select the timezone your date corresponds to
- Select your desired output unit (seconds or milliseconds)
- Click the "Convert" button to get the Unix timestamp
Batch Epoch / Timestamp Conversion
For multiple conversions, use the batch workflow to process Unix timestamps and date values line by line. This is useful for logs, CSV exports, API payloads, and migration checks.
Current Unix Timestamp in Seconds and Milliseconds
The live timestamp panel on this page shows the current Unix timestamp in both seconds and milliseconds. Use seconds for classic Unix and many backend systems, or milliseconds for JavaScript, browser events, analytics payloads, and frontend telemetry. For a dedicated live view with one-click copy, see the Current Timestamp page; to measure the gap between two epoch values, use the Timestamp Difference Calculator.
10-Digit vs 13-Digit Timestamp
A 10-digit value usually means Unix seconds. A 13-digit value usually means Unix milliseconds. If you are debugging API responses, browser logs, SQL exports, or tracking events, checking the digit length is the fastest way to tell which timestamp format you are working with. For dedicated milliseconds workflows, try Unix ms to Date; to decode any epoch value into UTC and local time, use the Unix Timestamp Converter.
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.
How do I get the current Unix timestamp?
Use the live current timestamp panel or click the current-time actions in our tools to copy the current Unix timestamp in seconds or milliseconds. This is useful for API testing, logs, and event tracking.
How can I tell if a timestamp is in seconds or milliseconds?
A 10-digit Unix timestamp is usually in seconds, while a 13-digit value is usually in milliseconds. If a value looks too large to be a normal date in seconds, it is typically a millisecond timestamp from JavaScript or analytics systems.
Common Unix Timestamp Use Cases
Unix timestamps are used across engineering, analytics, and operations workflows:
- 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
Why developers use UnixEpoch.net
Visible author and review context
Tool and blog pages include author details, editorial context, and a recent review timestamp.
Tools and articles reinforce each other
Guides link back to relevant tools, while tool pages include FAQs, explainers, and developer resources.
Editorial and domain context
UnixEpoch.net focuses on developer, analyst, and operations workflows around timestamp conversion, timezone coordination, date troubleshooting, and API debugging. Pages pair tool functionality with practical usage guidance and review metadata.
- Coverage spans Unix timestamps, epoch conversion, date parsing, and timezone workflows.
- Pages expose FAQ, HowTo, and Breadcrumb structured data to clarify purpose to search engines.
- Trust pages such as About, Contact, Privacy, and Terms remain accessible site-wide.
- Blog content and utility pages cross-link so readers can move from explanation to execution quickly.
Common workflows
Check whether an incoming epoch value is in seconds or milliseconds and compare UTC and local output immediately.
API debuggingLogs and payload validation
Combine timezone conversion, overlap planning, and date conversion in one workflow.
Timezone coordinationMeetings and scheduling
Reduce manual conversion mistakes when updating schemas, verifying historical data, or writing migration scripts.
Data migrationDatabase and scripting tasks
HTTPS delivery
Public pages are served over HTTPS by default.
Policy pages available
Privacy, terms, and disclaimer links remain visible in the footer.
Multilingual indexing signals
The sitemap covers locale entry pages and core tools.
Responsive tool layouts
Navigation and utility pages are designed for desktop and mobile screens.