UUID Generator - Free Online | ToolXHub
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About this tool
UUID Generator is a free online generator. Generate standard UUID v4 unique identifiers. Generate text, codes, and assets with one click. It runs entirely in your browser — no download or sign-up needed.
Select the UID version (v4 random, v1 based on timestamp and MAC address), set the number of generations (1-1000), and select the format (standard hyphen, non-hyphen, upper case). After clicking Generate, the system displays a list, and you can copy all or individual UIDs with just a click.
UIDv4 uses Crypto.getRandomValues () to generate 122-bit random numbers, with a very low collision probability (about 1/2 ' 122). UID v1 is based on the current time and the MAC address of the network card to ensure chronological order. This format follows the RFC 4122 standard.
Suitable for scenarios that require globally unique identification, such as database public key generation, session ID, and file naming. It is safer than self-added ID. It is not easy to guess.
UID generation tool, which generates UIDs v4 (random) or v1 (time-based) in batches, and supports upper case/upper case, dehyphen and other formats.