The internet is approximately 15 zettabytes. By way of comparison, all the world's beaches combined have been estimated to hold roughly 10^21 grains of sand.
| zettabyte | 1021 | 1,000,000,000,000,000,000,000 | sextillion |
| exabyte | 1018 | 1,000,000,000,000,000,000 | quintillion |
| petabyte | 1015 | 1,000,000,000,000,000 | quadrillion |
| terabyte | 1012 | 1,000,000,000,000 | trillion |
| gigabyte | 109 | 1,000,000,000 | billion |
| megabyte | 106 | 1,000,000 | million |
| kilobyte | 103 | 1,000 | thousand |
| byte | 100 | 1 | one |
