Hex to Base64 Converter

This tool converts hexadecimal byte data into a Base64 string directly in your browser. It is useful when you receive data in hex format and need it in Base64 for APIs, storage, or transport-friendly encoding. For broader encoding needs, try the UTF8 Converter which supports hex, decimal, binary, and more.

How this converter works

It removes spaces and optional 0x prefixes from your input.
It validates that your value contains only hexadecimal digits (0-9 and A-F).
It checks that the digit count is even so every byte is complete.
It converts each hex byte to binary and encodes the bytes as Base64.

Accepted input examples

54686520717569636B20
54 68 65 20 71 75 69 63 6B 20
0x54 0x68 0x65 0x20

When to use Hex to Base64 conversion

Preparing payloads for APIs that expect Base64.
Encoding binary values from low-level tools into text-safe strings.
Normalizing diagnostic or protocol data before sharing.
Converting cryptographic byte output into portable text format.
Need the reverse? Use the Binary to Base64 Converter for direct binary-to-Base64 conversion.

Frequently Asked Questions

Why must hex input have an even number of digits?

Every byte is represented by exactly two hex digits. If the number of digits is odd, at least one byte is incomplete and cannot be converted correctly.

Does this tool send my data to a server?

No. The conversion is handled in the browser, so your input stays local to your device during normal use.

Is Base64 the same as encryption?

No. Base64 is an encoding format, not encryption. Anyone can decode Base64 back to the original bytes. For JSON-specific Base64 encoding, check the JSON to Base64 Converter.

Why is my output longer than the input?

Base64 expands binary data by design. The output is usually about 33% longer than the original bytes.

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Hex to Base64 Converter