Hex to Base64 Converter

Summary

Paste a hexadecimal byte string and convert it to standard or URL-safe Base64 instantly.

How it works

1. Paste your hex string into the input field (e.g. 48656c6c6f or 48 65 6c 6c 6f).
2. Select Standard or URL-safe Base64 alphabet.
3. Click Convert to generate the Base64 output.
4. Copy the result with the Copy button.
5. Use Swap to reverse the direction and decode Base64 back to hex.

Use cases

• Converting hex-encoded cryptographic hashes or digests to Base64 for JWT or API use.
• Transforming hex byte dumps from network captures into Base64 for embedding.
• Encoding raw binary data expressed as hex for use in data URIs.
• Verifying encoder/decoder round-trips during protocol debugging.
• Preparing hex-formatted keys or nonces for Base64-based storage formats.
• Converting hex color bytes or binary blobs for web or mobile data transport.

Frequently Asked Questions