As we know that BLOB is a binary large object that can hold a variable amount of data. The different TEXT objects offer a range of storage space from 255 bytes to 4 Gb. Following table shows the storage of different kinds of BLOB data type −
| Type of BLOB | Maximum amount of Data that can be stored | Overhead |
| TINYBLOB | Up to 255 bytes | 1 byte |
| BLOB | Up to 64 Kb | 2 bytes |
| MEDIUMBLOB | Up to 16 Mb | 3 bytes |
| LONGBLOB | Up to 4 Gb | 1 Bytes |