Metric prefixes (Greek) used in the SI to express multiples and submultiples of the units above (and others).
| Value (multiply by) | Prefix | Symbol |
| 1024 | Yotta | Y |
| 1021 | Zetta | Z |
| 1018 | Exa | E |
| 1015 | Peta | P |
| 1012 | Tera | T |
| 109 | Giga | G |
| 106 | Mega | M |
| 103 | Kilo | k |
| 102 | Hecto | h |
| 10 | Deca | da |
| 10-1 | Deci | d |
| 10-2 | Centi | c |
| 10-3 | Mili | m |
| 10-6 | Micro | ? |
| 10-9 | Nano | n |
| 10-12 | Pico | P |
| 10-15 | Femto | F |
| 10-18 | Atto | A |
| 10-21 | Zepto | Z |
| 10-24 | Yocto | Y |
