Unix Time Converter

What is Unix time?

Unix time is a continuous count of seconds (or milliseconds) since 00:00:00 UTC on January 1, 1970. It avoids timezone ambiguity and is easy to compare, which is why developers use it for logs, telemetry, and scheduled jobs.

How to use the Unix Time Converter

• Paste a Unix timestamp (seconds or milliseconds) to see the local date and relative time.
• Enter a date and time to generate epoch seconds and milliseconds for scripts or APIs.
• Copy or download the converted values to reuse in automation, logs, or QA notes.
• Toggle formats if you need milliseconds precision for telemetry or scheduling.

Note: The converter works entirely in your browser, so your timestamps stay private. Ensure your system clock is accurate for the live epoch display.

Why use a Unix Time Converter?

• Normalize timestamps across logs, API events, and audits.
• Translate epoch values to readable dates for reports and RCA notes.
• Quickly check if a 10-digit value is in seconds or milliseconds.
• Compare environments in different time zones without timezone math.
• Paste a date to get the corresponding epoch for scripts and cron jobs.

Unix timestamp basics

Unix time counts the seconds (or milliseconds) since January 1, 1970 UTC. It is timezone-neutral and ideal for storing and comparing events. Ten digits usually mean seconds, while thirteen digits indicate milliseconds.

• Epoch start: 00:00:00 UTC on 1 Jan 1970.
• Seconds vs. milliseconds: 10 digits vs. 13 digits.
• Timezone handling: Converted output uses your local timezone and also shows relative time.
• Precision: Milliseconds give you three extra digits for scheduling and telemetry.

How to convert Unix time on this page

• Paste an epoch value to instantly view the local date and a relative time hint.
• Enter a date and time to generate Unix seconds and milliseconds.
• Use the live clock to copy the current epoch for scripts or API calls.
• Toggle between seconds and milliseconds if you need a specific format.

Tips for accurate conversions

• Confirm the length: 10 digits = seconds, 13 digits = milliseconds.
• Remember daylight saving only affects the displayed local time, not the Unix value.
• For logs, store the raw epoch and render it to a timezone only in the UI.
• Include timezone offsets in reports so teammates interpret values consistently.
• For long-lived systems, ensure you are using 64-bit epoch values beyond 2038.

Frequently Asked Questions

What does this Unix Time Converter do?

It converts Unix timestamps to human-readable dates and back. Paste an epoch value or pick a date and you will see the corresponding time in seconds and milliseconds.

Why do some timestamps have 13 digits?

Ten digits are seconds. Thirteen digits include milliseconds for higher precision. The converter detects the length and formats the date correctly.

Is any data stored or sent to a server?

No. All conversions happen in your browser. Clear the fields when you are done to remove the values from the page.

How accurate is the live Unix clock?

It uses your device clock. For sub-second precision in telemetry, prefer milliseconds and make sure your system time is synced with NTP.

Will this work after 2038?

Yes. The converter handles 64-bit epoch values, so you can inspect dates far beyond the 2038 boundary.