Jump to
Table of Contents
Share this
ADVERTISEMENT
Characteristic lengths
Select a unit:
| Field | Object | Length in | Remarks |
|---|---|---|---|
| Nature |  Mount Everest elevation | info | |
 Ocean's maximum known depth | info | ||
 Earth's mean radius | info | ||
 Earth's equator length | info | ||
 Longest river (Nile) length | info | ||
| Deepest lake (Baikal) bottom | info | ||
| Construction |  Length of the Great Wall of China | info | |
 Longest bride span (Akashi Kaikyo) | info | ||
 Tallest building (Burj Khalifa) | info | ||
 Tallest dam (Jinping-I Dam) | info | ||
 Longest railway line (Trans-Siberian) | info | ||
| Longest metro system line length (Shangai) | info | ||
| Technology |  Longest ship (Seawise Giant) | info | |
 Longest airplane (An-225 Mriya) | info | ||
 International Space Station width | info | ||
 Highest rocket (Saturn V) | info | ||
 Longest haul truck (BelAZ 75710) | info | ||
 Semiconductor feature size (2015) | info | ||
| Space |  Moon-earth average distance | info | |
 Sun earth mean distance | info | ||
 Sun diameter (equatorial) | info | ||
 Largest known star diameter (UY Scuti) | info | ||
 Solar system radius (up to Kuiper belt) | info | ||
 Distance to Alpha Centauri (closest star) | info | ||
 Milkyway size (our galaxy) | info | ||
| Largest known galaxy size (IC 1101) | info | ||
| Observable universe diameter | info | ||
| Physics |  Proton charge radius | info | |
 Hydrogen atom radius (empirical) | info | ||
 Gamma rays wavelength | info | ||
 Visible light shortest wavelength (violet) | info | ||
| Visible light longest wavelength (red) | info | ||
 VHF wavelength (upper) | info |
Table of Contents
Share this
Convert to all other units
Enter a value to the length field above, in order to see the results in this table.
| System | Convert to: | Result |
|---|---|---|
| SI | Nanometers [nm] | |
| Micrometers [μm] | ||
| Millimeters [mm] | ||
| Centimeters [cm] | ||
| Meters [m] | ||
| Kilometers [km] | ||
| Imperial | Mils [mil] | |
| Inches [in] | ||
| Feet [ft] | ||
| Yards [yd] | ||
| Miles [mi] | ||
| Nautical Miles [NM] | ||
| Astronomical | Parsecs [pc] | |
| Astronomical units [au] | ||
| Light seconds [ls] | ||
| Light years [ly] | ||
| Historical | Leagues (land) [leag] | |
| Leagues (nautical) [naut. league(s)] | ||
| Metric leagues [metric league(s)] | ||
| Russian versts [verst(s)] | ||
| Roman Stadiums [stadium(s)] | ||
| Greek Stadia [stadia] |
Relationships between units of length
Select a unit:
| System | Unit | Length in | Info |
|---|---|---|---|
| SI | 1 Nanometer [nm] = | 1 nm = 0.001 μm = 1x10-9 [more...] | |
| 1 Micrometer [μm] = | 1 μm = 0.001 mm = 1x10-6 [more...] | ||
| 1 Millimeter [mm] = | 1 mm = 0.001 m [more...] | ||
| 1 Centimeter [cm] = | 1 cm = 10 mm = 0.01 m [more...] | ||
| 1 Meter [m] = | 1 m = the length of the path travelled by light in vacuum during a time interval of 1/299792458 of a second [more...] | ||
| 1 Kilometer [km] = | 1 km = 1000 m [more...] | ||
| Imperial | 1 Mil [mil] = | 1 mil = 0.001 in = 0.0254 mm [more...] | |
| 1 Inch [in] = | 1 inch = 25.4 mm = 0.0254 m [more...] | ||
| 1 Foot [ft] = | 1 feet = 12 inches = 0.3048 m [more...] | ||
| 1 Yard [yd] = | 1 yard = 3 feet = 36 inches = 0.9144 m [more...] | ||
| 1 Mile [mi] = | 1 mile = 1760 yards = 5280 feet = 1609.344 m [more...] | ||
| 1 Nautical Mile [NM] = | 1 nautical mile = 6076 feet = 1852 m [more...] | ||
| Astronomical | 1 Parsec [pc] = | 1 parsec = 3.0857x1016 m = 3.26156 light years [more...] | |
| 1 Astronomical unit [au] = | 1 au = 149 597 870.7 km roughly the earth-sun distance [more...] | ||
| 1 Light second [ls] = | 1 light second = 299792458 m ≈ 186280 mi [more...] | ||
| 1 Light year [ly] = | 1 light year = 0.3066 parsecs = 9.4607x1015m [more...] | ||
| Historical | 1 League (land) [leag] = | 1 league = 3 miles = 4828.032 m [more...] | |
| 1 League (nautical) [naut. league(s)] = | 1 nautical league = 3 naut. miles = 5556 m [more...] | ||
| 1 Metric league [metric league(s)] = | 1 metric league = 2.4855 miles = 4000 m [more...] | ||
| 1 Russian verst [verst(s)] = | 1 verst = 0.6629 miles = 1066.8 m [more...] | ||
| 1 Roman Stadium [stadium(s)] = | 1 stadium = 184.9m = 600 Greek (attic) feet [more...] | ||
| 1 Greek Stadion [stadia] = | 1 stadion = 600 Greek feet = 157.7 m on average [more...] |