Binary/Hex/Oct Time Converter

Enter a Unix epoch timestamp in decimal, binary, octal, or hexadecimal format and this tool converts it across all four number bases simultaneously. Paste your value into the Timestamp field, select its Input Format, and get back the equivalent Binary, Octal, Decimal, and Hexadecimal representations — plus a human-readable UTC date/time string. Also try the use the RFC 2822 Date Converter.

Results

Decimal (Base 10)

Binary (Base 2)

Octal (Base 8)

Hexadecimal (Base 16)

UTC Date & Time

Results Table

What is a Unix epoch timestamp?

A Unix epoch timestamp is the total number of seconds elapsed since January 1, 1970 at 00:00:00 UTC (the Unix Epoch). It provides a universal, timezone-independent way for computer systems to record and compare moments in time. Most systems express it as a plain decimal integer. See also our calculate UTC Offset.

Why would I need a timestamp in binary, octal, or hex?

Low-level programming, embedded systems, network protocols, and database internals often store or transmit timestamps in non-decimal bases to save space or align with hardware word sizes. Hex timestamps are common in log files and memory dumps, while binary representations help when inspecting individual bit fields.

How do I convert a hex timestamp to a human-readable date?

Paste your hex value (e.g. 6553FC80 or 0x6553FC80) into the Timestamp Value field, select 'Hexadecimal (base 16)' as the Input Format, and the tool will convert it to decimal seconds and then display the corresponding UTC date and time.

Does the tool support timestamps with a leading 0x or 0b prefix?

Yes. The converter automatically strips a leading '0x' prefix for hexadecimal input and a leading '0b' prefix for binary input, so you can paste values directly from code or log output without editing them first. You might also find our Time Zone Difference Calculator useful.

What happens on January 19, 2038?

This is the Year 2038 Problem (Y2K38). On January 19, 2038 at 03:14:07 UTC, 32-bit signed integer Unix timestamps overflow and roll over to a negative number, which older systems may misinterpret. Modern 64-bit systems are not affected, as they can represent timestamps hundreds of billions of years into the future.

What is the difference between octal and hexadecimal representation?

Octal (base 8) uses digits 0–7 and was historically popular with older computing architectures. Hexadecimal (base 16) uses digits 0–9 plus letters A–F and is the dominant non-decimal base today because each hex digit maps exactly to four binary bits (one nibble), making it very compact for representing binary data.

Can I convert millisecond or microsecond timestamps?

This tool works with standard Unix timestamps in whole seconds. If you have a millisecond timestamp (13 digits) or microsecond timestamp, divide it by 1,000 or 1,000,000 first to get the seconds value before entering it here.

Why does my binary timestamp look so long?

A current Unix timestamp (around 1.7 billion seconds) requires about 31 binary digits to represent in base 2. Binary is the most verbose of the four bases, which is why hex is preferred when compactness matters — the same value fits in just 8 hexadecimal characters.