GUID Generator From time to time you just need a random GUID (UUID outside of the Microsoft world). What is a GUID? Per Wikipedia: A Globally Unique Identifier (GUID) is a unique reference number used as an identifier in computer software. The term GUID typically refers to various implementations of the universally unique identifier (UUID) standard. Assuming uniform probability for simplicity, the probability of one duplicate would be about 50% if every person on earth owned 600 million GUIDs. They are most commonly used as database (SQL server) keys, Windows registry keys and other various development tasks where unique keys are needed. Create Random GUIDs Number of GUIDs to generate Formatting Options Enclose in braces {} Remove dashes - Uppercase Letters Only Standard Format (no-encoding) Base64 encoded Ascii85 encoded Guid.Empty GUIDs Generated 9cd6fee9-5cad-49f1-8332-9a2c5ef110a8