数据存储换算区分二进制(1KB=1024B,操作系统与硬盘分区常用)与十进制(1kB=1000B,硬盘标称容量常用)两种进率。文件大小换算按二进制,硬盘标称容量按十进制。
下表数值含义:第一列单位数值为 1 时,对应各列单位的换算结果。
| 1 ≡ | bit | B | KB | MB | GB | TB | PB | kB | MB | GB | TB | KiB |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| bit 比特 | 1 | 0.125 | 0.00012207 | 0.00000012 | 1.1642e-10 | 1.1369e-13 | 1.1102e-16 | 0.000125 | 0.00000012 | 1.25e-10 | 1.25e-13 | 0.00012207 |
| B 字节 | 8 | 1 | 0.00097656 | 0.00000095 | 9.3132e-10 | 9.0949e-13 | 8.8818e-16 | 0.001 | 0.000001 | 0 | 1.0e-12 | 0.00097656 |
| KB 千字节(1024B) | 8192 | 1024 | 1 | 0.00097656 | 0.00000095 | 9.3132e-10 | 9.0949e-13 | 1.024 | 0.001024 | 0.00000102 | 0 | 1 |
| MB 兆字节(1024KB) | 8388608 | 1048576 | 1024 | 1 | 0.00097656 | 0.00000095 | 9.3132e-10 | 1048.576 | 1.048576 | 0.00104858 | 0.00000105 | 1024 |
| GB 吉字节(1024MB) | 8589934592 | 1073741824 | 1048576 | 1024 | 1 | 0.00097656 | 0.00000095 | 1073741.824 | 1073.741824 | 1.07374182 | 0.00107374 | 1048576 |
| TB 太字节(1024GB) | 8.7961e+12 | 1.0995e+12 | 1073741824 | 1048576 | 1024 | 1 | 0.00097656 | 1099511627.77600002 | 1099511.627776 | 1099.51162778 | 1.09951163 | 1073741824 |
| PB 拍字节(1024TB) | 9.0072e+15 | 1.1259e+15 | 1.0995e+12 | 1073741824 | 1048576 | 1024 | 1 | 1.1259e+12 | 1125899906.84262395 | 1125899.90684262 | 1125.89990684 | 1.0995e+12 |
| kB 千字节(1000B) | 8000 | 1000 | 0.9765625 | 0.00095367 | 0.00000093 | 9.0949e-10 | 8.8818e-13 | 1 | 0.001 | 0.000001 | 0 | 0.9765625 |
| MB 兆字节(1000kB) | 8000000 | 1000000 | 976.5625 | 0.95367432 | 0.00093132 | 0.00000091 | 8.8818e-10 | 1000 | 1 | 0.001 | 0.000001 | 976.5625 |
| GB 吉字节(1000MB) | 8000000000 | 1000000000 | 976562.5 | 953.67431641 | 0.93132257 | 0.00090949 | 0.00000089 | 1000000 | 1000 | 1 | 0.001 | 976562.5 |
| TB 太字节(1000GB) | 8.0e+12 | 1.0e+12 | 976562500 | 953674.31640625 | 931.32257462 | 0.9094947 | 0.00088818 | 1000000000 | 1000000 | 1000 | 1 | 976562500 |
| KiB 千字节(kiB) | 8192 | 1024 | 1 | 0.00097656 | 0.00000095 | 9.3132e-10 | 9.0949e-13 | 1.024 | 0.001024 | 0.00000102 | 0 | 1 |