Unix Timestamp Converter

Convert between Unix timestamps and human dates

Current timestamp

Seconds

—

Milliseconds

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Timestamp → Date

Date → Timestamp

Free Unix timestamp converter — seconds, milliseconds, ISO 8601

Toololis Timestamp Converter converts between Unix timestamps and human dates. Handles both seconds (10 digits) and milliseconds (13 digits). Shows the date in your local timezone and UTC. Plus: live current timestamp.

How to use this tool

1
Current timestamp
Click "Now" to fetch the current Unix timestamp in seconds and milliseconds.
2
Timestamp → Date
Paste any Unix timestamp (seconds OR milliseconds — we auto-detect) and see the human-readable date.
3
Date → Timestamp
Pick a date and time. Get the corresponding Unix timestamp in your local or UTC timezone.

Common timestamps as reference

Unix epoch start: 0 = 1970-01-01T00:00:00Z
Year 2000: 946684800
Year 2020: 1577836800
Year 2030: 1893456000
Year 2038 overflow: 2147483647 (32-bit signed max)

Frequently Asked Questions

What is a Unix timestamp?

The number of seconds since January 1, 1970, 00:00:00 UTC. Also called Unix epoch time. Widely used in databases, APIs, and log files because it's timezone-agnostic.

Seconds or milliseconds?

Both are common. JavaScript uses milliseconds (13 digits); most Unix systems and databases use seconds (10 digits). Our tool auto-detects based on length.

What about the year 2038 problem?

32-bit signed integers overflow at 2147483647 (= 2038-01-19 03:14:07 UTC). Modern systems use 64-bit timestamps which extend this to ~292 billion years. JavaScript is always 64-bit.

Does this handle timezones?

Yes. You can see the date in your local timezone OR UTC. The timestamp itself is always UTC — timezone only affects display.

Why start from 1970?

Historical reason — the Unix OS was designed in 1969 and developers picked the start of 1970 as "epoch zero". Been the standard ever since.

Is my data private?

100%. Conversion happens in your browser using Date and Date.now(). No server calls.

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