Units of Measurement
The International System of Units, sometimes abbreviated as SI, is the measurement system officially adopted almost everywhere in the world. It consists of a set of seven base units that include second, metre, kilogram, ampere, kelvin, mole, and candela. These units allow an unlimited number of additional derived units, through which it is theoretically possible to measure everything in the universe. In addition to these units, there are others that can measure the same quantities. The distance and size of things can be measured in meters, but also converted in kilometres, miles, feet, inches or light years.
List of things by size
The next list shows the dimensions of different objects in picometres, metres and light years. Among the objects are chemical elements, viruses, animals, buildings, planets, black holes, galaxies, among others.
# | Thing | Size in Picometres | Size in Metres | Size in Light-Years |
|---|---|---|---|---|
| 1 | Hydrogen (H) | 240 | 0.000000000240 | 0.000000000000000000000000025 |
| 2 | Uranium (U) | 372 | 0.000000000372 | 0.000000000000000000000000039 |
| 3 | Prion | 10,000 | 0.000000010 | 0.000000000000000000000001 |
| 4 | Parvovirus | 18,000 | 0.000000018 | 0.000000000000000000000002 |
| 5 | Mycoplasma | 300,000 | 0.000000300 | 0.000000000000000000000032 |
| 6 | Myxobolus Shekel | 8,500,000 | 0.000009 | 0.000000000000000000001 |
| 7 | Cochlodispus Minimus | 79,000,000 | 0.000079 | 0.000000000000000000008 |
| 8 | Condylonucula Maya | 540,000,000 | 0.001 | 0.000000000000000000057 |
| 9 | Psammothuria Ganapati | 4,000,000,000 | 0.004 | 0.000000000000000000423 |
| 10 | Photocorynus Spiniceps | 6,200,000,000 | 0.006 | 0.000000000000000001 |
| 11 | Paedocypris Progenetica | 7,900,000,000 | 0.008 | 0.000000000000000001 |
| 12 | Bee Hummingbird | 50,000,000,000 | 0.050 | 0.000000000000000005 |
| 13 | Chersobius Signatus (Speckled Tortoise) | 60,000,000,000 | 0.060 | 0.000000000000000006 |
| 14 | Human (Male) | 1,720,000,000,000 | 1.72 | 0.000000000000000182 |
| 15 | Ostrich | 2,100,000,000,000 | 2.1 | 0.000000000000000222 |
| 16 | Saltwater Crocodile | 4,500,000,000,000 | 4.5 | 0.000000000000000476 |
| 17 | African Bush Elephant | 6,000,000,000,000 | 6 | 0.000000000000001 |
| 18 | Blue Whale | 24,000,000,000,000 | 24 | 0.000000000000003 |
| 19 | Statue of Liberty | 93,000,000,000,000 | 93 | 0.000000000000010 |
| 20 | Great Pyramid of Giza | 146,700,000,000,000 | 147 | 0.000000000000016 |
| 21 | Lincoln Cathedral | 160,000,000,000,000 | 160 | 0.000000000000017 |
| 22 | Eiffel Tower | 324,000,000,000,000 | 324 | 0.000000000000034 |
| 23 | Great Mosque of Mecca | 400,800,000,000,000 | 401 | 0.000000000000042 |
| 24 | Empire State Building | 443,200,000,000,000 | 443 | 0.000000000000047 |
| 25 | Abraj Al-Bait Clock Tower | 601,000,000,000,000 | 601 | 0.000000000000064 |
| 26 | Shanghai Tower | 632,000,000,000,000 | 632 | 0.000000000000067 |
| 27 | Burj Khalifa | 828,000,000,000,000 | 828 | 0.000000000000088 |
| 28 | Boeing Everett Factory | 1,000,000,000,000,000 | 1,000 | 0.000000000000106 |
| 29 | Ceres | 939,400,000,000,000,000 | 939,400 | 0.000000000099 |
| 30 | Eris | 2,326,000,000,000,000,000 | 2,326,000 | 0.000000000246 |
| 31 | Pluto | 2,376,600,000,000,000,000 | 2,376,600 | 0.000000000251 |
| 32 | Moon | 3,474,800,000,000,000,000 | 3,474,800 | 0.000000000367 |
| 33 | Mercury | 4,880,000,000,000,000,000 | 4,880,000 | 0.000000001 |
| 34 | Mars | 6,779,000,000,000,000,000 | 6,779,000 | 0.000000001 |
| 35 | Venus | 12,103,600,000,000,000,000 | 12,103,600 | 0.000000001 |
| 36 | Earth | 12,742,000,000,000,000,000 | 12,742,000 | 0.000000001 |
| 37 | Great Wall of China | 21,196,180,000,000,000,000 | 21,196,180 | 0.000000002 |
| 38 | Neptune | 49,244,000,000,000,000,000 | 49,244,000 | 0.000000005 |
| 39 | Uranus | 50,724,000,000,000,000,000 | 50,724,000 | 0.000000005 |
| 40 | Minecraft World (Java Edition) | 59,999,968,000,000,000,000 | 59,999,968 | 0.000000006 |
| 41 | Saturn | 116,464,000,000,000,000,000 | 116,464,000 | 0.000000012 |
| 42 | Jupiter | 139,822,000,000,000,000,000 | 139,822,000 | 0.000000015 |
| 43 | Centauri C (Proxima Centauri) | 214,553,880,000,000,000,000 | 214,553,880 | 0.000000023 |
| 44 | Centauri B (Toliman) | 1,201,056,480,000,000,000,000 | 1,201,056,480 | 0.000000127 |
| 45 | Sun | 1,391,400,000,000,000,000,000 | 1,391,400,000 | 0.000000147 |
| 46 | Centauri A (Rigil Kentaurus) | 1,702,238,760,000,000,000,000 | 1,702,238,760 | 0.000000180 |
| 47 | Distance from Earth to the Sun | 149,597,870,700,000,000,000,000 | 149,597,870,700 | 0.000016 |
| 48 | Sun (Red Giant Phase) | 356,198,400,000,000,000,000,000 | 356,198,400,000 | 0.000038 |
| 49 | UY Scuti | 2,376,000,000,000,000,000,000,000 | 2,376,000,000,000 | 0.000251 |
| 50 | Solar System | 26,927,616,780,000,000,000,000,000 | 26,927,616,780,000 | 0.003 |
| 51 | Holmberg 15A | 236,364,636,180,000,000,000,000,000 | 236,364,636,180,000 | 0.025 |
| 52 | TON 618 | 388,954,464,600,000,000,000,000,000 | 388,954,464,600,000 | 0.041 |
| 53 | Distance traveled by light in a year | 9,460,730,472,580,800,000,000,000,000 | 9,460,730,472,580,800 | 1 |
| 54 | Milky Way | 999,999,210,951,791,000,000,000,000,000,000 | 999,999,210,951,791,000,000 | 105,700 |
| 55 | Andromeda | 2,081,360,703,967,780,000,000,000,000,000,000 | 2,081,360,703,967,780,000,000 | 220,000 |
| 56 | IC 1101 | 3,973,506,798,483,940,000,000,000,000,000,000 | 3,973,506,798,483,940,000,000 | 420,000 |
| 57 | Local Galactic Group | 94,607,304,725,808,000,000,000,000,000,000,000 | 94,607,304,725,808,000,000,000 | 10,000,000 |
| 58 | Virgo Supercluster | 1,040,680,351,983,890,000,000,000,000,000,000,000 | 1,040,680,351,983,890,000,000,000 | 110,000,000 |
| 59 | Laniakea Supercluster | 4,919,579,845,742,020,000,000,000,000,000,000,000 | 4,919,579,845,742,020,000,000,000 | 520,000,000 |
| 60 | Hercules–Corona Borealis Great Wall | 94,607,304,725,808,000,000,000,000,000,000,000,000 | 94,607,304,725,808,000,000,000,000 | 10,000,000,000 |
| 61 | Observable Universe | 880,000,000,000,000,000,000,000,000,000,000,000,000 | 880,000,000,000,000,000,000,000,000 | 93,000,000,000 |