Length
Area
| 1km2 | 1,000,000 m2 |
| 1m2 | 1,000,000 mm2 |
| 1cm2 | 100mm2 |
Volume
| 1km3 | 1,000,000,000 m3 |
| 1m3 | 1,000,000,000 mm3 = 1,000 litres |
| 1cm3 | 1,000mm3 |
| 1 litre | 1,000cm3 = 1,000,000mm3 |
Speed
| 1km/s | 1000m/s |
| 1m/s | 1000mm/2 |
| 1cm/s | 10mm/s |
| 1 Speed point | 2m/s |
| 1 hour | 3,600 seconds |
| 3,600km/h | 1km/s |
| 3,600m/h | 1m/s |
| Speed of sound | 1,062 km/h = 0.295 km/s |
Computer data
| 1 bit | the smallest unit of data; 1 bit can be either on or off, 1 or 0, true or false, or however its 2 possible states are interpreted. |
| 4 bits | 1 nybble. 4 bits have 2^4 = 16 possible states. |
| 1 byte | 2 nybbles = 8 bits = 1 character of text (letter, number, space, punctuation) = 2^8 = 256 possible states. |
| 1024 bytes | 1Kb (Kilobyte) = 1,024 bytes |
| 1024 Kb | 1Mb (Megabyte) = 1,048,576 bytes |
| 1024 Mb | 1Gb (Gigabyte) = 1,073,741,824 bytes |
| 1024 Gb | 1Tb (Terabyte) = 1,099,511,627,776 bytes |
| 1024 Tb | 1Pb (Petabyte) = 1,125,899,906,842,624 bytes |