UUID to Base64 Converter

Convert UUID bytes to compact Base64/Base64URL locally with optional padding.

UUID

Alphabet

Padding

ReadyA UUID is exactly 16 bytes; standard padded Base64 therefore uses 24 characters.

How to use this UUID to Base64 Converter

Encode the raw 16 bytes of a UUID as standard or URL-safe Base64. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.