Full name: nibblePlural form: nibblesAlternate spelling: nybblesCategory type: computer data storageScale factor: 0.5Valid units must be of the computer data storage type. You can use this form to select from known units: A nibble (often, nybble) is the computing term for a four-bit aggregation, or half an octet (an octet being an 8-bit byte). As a nibble contains 4 bits, there are sixteen possible values, so a nibble corresponds to a single hexadecimal digit (thus, it is often referred to as a "hex digit" or "hexit").