UUID Format Converter

Normalize valid UUID text and transform only its textual representation without changing the underlying 128 bits.

UUID in any accepted text form

ReadyOnly presentation changes. The underlying 128 UUID bits are identical in canonical, uppercase, braces, URN, and compact forms.

One 128-bit value, eight useful forms

Canonical, uppercase, braces, URN, compact hexadecimal, unsigned integer, Base64, and Base64URL are presented as equivalent encodings of the same 16 bytes, with integer/Base64 round-trip verification.

RFC 9562 boundary

UUIDs are 128-bit values. Version meaning is interpreted only inside the appropriate variant, and representation conversion never changes the underlying 16 bytes.