Base64 to Hex

The Base64 to Hex tool converts Base64 encoded strings into their hexadecimal representation. Base64 and hex are both common encoding formats, but they serve different purposes — Base64 is often used to safely transmit binary data as ASCII text, while hexadecimal is the preferred format for inspecting raw bytes, working with cryptographic hashes, and low-level data manipulation. This tool bridges the gap between the two formats in a single step.

For developers, this conversion is essential when working with binary protocols, certificate data, cryptographic keys, or any scenario where a Base64 payload needs to be examined at the byte level. Rather than writing a custom decode-then-encode script, this tool gives you instant, reliable output you can copy directly into your code, logs, or debugging workflow.

Using the tool is straightforward: paste your Base64 encoded string into the input field and the hexadecimal output is generated immediately. The input should be a valid Base64 string — standard Base64 using the characters A–Z, a–z, 0–9, +, and /, with optional = padding at the end. URL-safe Base64 variants (using - and _ instead of + and /) are also commonly supported. The output will be a continuous or space-separated hex string representing the decoded byte values.

The conversion works by first decoding the Base64 string back to its raw binary data, then re-encoding each byte as a two-character hexadecimal value. For example, the Base64 string SGVsbG8= decodes to the ASCII text "Hello", which in hex is 48 65 6c 6c 6f. This makes it easy to verify the actual bytes behind any Base64 payload.

A few edge cases to keep in mind: invalid Base64 characters or incorrect padding will cause a decoding error, so ensure your input is well-formed before converting. Very long Base64 strings — such as encoded images or binary files — will produce proportionally long hex output. If your Base64 string represents binary data rather than text, the hex output is often the most useful way to inspect it, since raw binary cannot be displayed as readable characters.