| 单位 | 缩写 | 定义 |
| 位 | bit | 最小的存储单位，表示一个二进制数（0或1） |
| 字节 | byte | 通常由8位组成，可以表示256种状态 |
| 千字节 | kilobyte, KB | 1KB = 1024 Bytes |
| 兆字节 | megabyte, MB | 1MB = 1024 KB = 1,048,576 Bytes |
| 吉字节 | gigabyte, GB | 1GB = 1024 MB = 1,073,741,824 Bytes |
| 太字节 | terabyte, TB | 1TB = 1024 GB = 1,099,511,627,776 Bytes |
| 百万太字节 | petabyte, PB | 1PB = 1024 TB = 1,125,899,906,842,624 Bytes |
| 艾字节 | exabyte, EB | 1EB = 1024 PB = 1,152,921,504,606,846,976 Bytes |
| 泽字节 | zettabyte, ZB | 1ZB = 1024 EB = 1,180,591,620,717,411,303,424 Bytes |
| 尧字节 | yottabyte, YB | 1YB = 1024 ZB = 1,208,925,819,614,629,174,706,176 Bytes |