What input formats does this converter support?

It accepts 8-digit hex seconds (bare or with a 0x prefix), 11-digit hex milliseconds, decimal seconds, decimal milliseconds, and standard date strings.

When should I switch the byte order to Little-endian?

Use Little-endian when reading timestamps extracted from binary structures or x86/ARM memory dumps where least significant bytes are stored first.

What is the difference between 8-digit and 11-digit hex timestamps?

An 8-digit hex value represents Unix time in seconds, while an 11-digit hex value represents high-precision Unix time in milliseconds.

Why is my hex value rejected with an error?

Inputs are rejected if they contain non-hex characters or resolve to dates before January 1, 1970, or after the year 9999.

Are timestamps converted to local time or UTC?

The primary formatted output is rendered in ISO 8601 UTC alongside all corresponding numerical epoch representations.

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Unix Hex Timestamp Converter

Convert Unix timestamps between hexadecimal and decimal/ISO — paste 0x5F6B3A2F, a bare 8-digit hex value, decimal seconds or milliseconds, or a date, and get every form back.

Details

What this tool helps you do

Unix timestamps show up in hexadecimal all over embedded logs, file formats, game replays and databases: 8 uppercase hex digits like 5F6B3A2F are seconds since 1970-01-01, and 11-digit hex values are milliseconds. Paste any of those — with or without the 0x prefix — or a decimal seconds/milliseconds value, or a plain date string, and the converter auto-detects the kind and prints the whole family: ISO 8601 UTC, decimal seconds, decimal milliseconds, uppercase 8-digit hex seconds (both bare and 0x-prefixed) and 11-digit hex milliseconds. A little-endian switch re-reads the hex bytes in reverse order for the formats that store timestamps byte-flipped. Inputs are range-checked against 1970 up to year 9999 so a typo like 5F6B3A2G or a garbage value is rejected with an explanation instead of producing a date in the Stone Age.

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Unix Hex Timestamp Converter

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Key facts

Overview

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Use cases

Examples

1. Decoding an Embedded Log Hex Timestamp

2. Parsing Little-Endian Timestamp from Binary Header

FAQ

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