What is a Base64 to hex decoder?
A Base64 to hex decoder converts the decoded bytes behind a Base64 string into hexadecimal. This is the safest view when you need to inspect file headers, hashes, signatures, or binary payloads.
How to use it
- Paste the Base64 or Base64URL value.
- Choose whether the hex bytes should be separated by spaces.
- Copy the hex output for debugging or comparison.
Example
Input: SGVsbG8=
Output: 48 65 6C 6C 6F
Common mistakes
- Hex output is a byte view, not decoded text.
- If the first bytes look like
25 50 44 46, the payload is likely a PDF. - If the first bytes look like
89 50 4E 47, the payload is likely a PNG image.
Related tools
- Reverse the conversion with Hex to Base64.
- Decode readable data with Base64 to text.
- Check gzip bytes with Base64 gzip compression checker.
Privacy and security
The decoded bytes are inspected locally in your browser.