The International System of Units is often abbreviated as SI, and it is the system of measurement used in many countries in the world. The base unit of length in the international system is meter, but there are other derived length units.
The table below is the length units examples in the International System and their conversion to meters.
| Unit | Symbol | In Meters | Name | Details |
|---|---|---|---|---|
| Yottameter | Ym | 1 Ym = 1024 m | septillion | more |
| Zettameter | Zm | 1 Zm = 1021 m | sextillion | more |
| Exameter | Em | 1 Em = 1018 m | quintillion | more |
| Petameter | Pm | 1 Pm = 1015 m | quadrillion | more |
| Terameter | Tm | 1 Tm = 1012 m | trillion | more |
| Gigameter | Gm | 1 Gm = 109 m | billion | more |
| Megameter | Mm | 1 Mm = 106 m | million | more |
| Kilometer | km | 1 km = 103 m | thousand | more |
| Hectometer | hm | 1 hm = 100 m | hundred | more |
| Dekameter | dam | 1 dam = 10 m | ten | more |
| Meter | m | 1 m = 1 m | one | base unit |
| Decimeter | dm | 1 dm = 0.1 m | tenth | more |
| Centimeter | cm | 1 cm = 0.01 m | hundredth | more |
| Millimeter | mm | 1 mm = 10-3 m | thousandth | more |
| Micrometer | μm | 1 μm = 10-6 m | millionth | more |
| Nanometer | nm | 1 nm = 10-9 m | billionth | more |
| Picometer | pm | 1 pm = 10-12 m | trillionth | more |
| Femtometer | fm | 1 fm = 10-15 m | quadrillionth | more |
| Attometer | am | 1 am = 10-18 m | quintillionth | more |
| Zeptometer | zm | 1 zm = 10-21 m | sextillionth | more |
| Yoctometer | ym | 1 ym = 10-24 m | septillionth | more |
