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Help me, Obi-Wan Kenobi. You're my only hope.

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This is a list of measurement units used throughout galactic history in science, mathematics, and other studies.

Data Storage[]




  • 1 pint[10]
  • 1 gallon[11]
  • 1 litre[12]
  • 1 cubic centimeter (cm3)
  • 1 cubic meter (m3)[13]
  • 1 cubic kilometer (km3)[14]



Standard time measurements:

Time measurements used in one region, culture, or era:

Mass & Weight[]






  • 1 degree = 1/360th of a full circle[30]
  • Right angle (90 degrees)

UV Index[]

  • Reaches to a peak of 44.9[31]


Artillery rankings[]

Shield strength[]

Hull rating[]

Maneuverability rating[]


  • 1 joule[36]
  • 1 albar
  • 1 megajoule = 1,000,000 joules[36][6]
  • 1 gigaton = 1,000,000,000 tons of TNT[36]
  • 1 watt[36]
  • 1 gigawatt[6]
  • 1 Energy Unit, approximately the energy required to power a single shot from a standard blaster[37]
  • 1 Power Unit, possibly equal or close to an Energy Unit[37]



Musical units[]

  • Key, as in "Key of Cresh"[39]
  • Octave[40]



Behind the scenes[]

The metric system is the primary form of measurement. However, temperature units would not be named Kelvin, or Fahrenheit, since they were named for men from Earth, but rather by centigrade or the more benign "standard" developed in the online Visual Guides. Despite this, certain units are used that are named after scientists from Earth, including celsius, watt, joule, and hertz.

The metric system also applies to quantities as well, beyond the standard SI prefix. See Large Numbers for more details.


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I find your lack of sources disturbing.

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Notes and references[]

  1. 1.0 1.1 The Truce at Bakura
  2. The Rebel Alliance Sourcebook
  3. 3.0 3.1 Cracken's Rebel Field Guide
  4. Republic Commando: True Colors
  5. 5.0 5.1 Legacy of the Force: Bloodlines
  6. 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 Death Star
  7. 7.0 7.1 The New Jedi Order: Dark Journey
  8. A Time to Mourn, a Time to Dance: Oola's Tale. Implied to be the Twi'lek "small unit" along the lines of a centimeter or an inch: "...two stormtroopers examined every square glekk of the shuttle."
  9. Battle for the Golden Sun, p. 9
  10. Mentioned in Qui-Gon and Obi-Wan: The Aurorient Express
  11. Mentioned in Children of the Jedi
  12. A Mon Alone
  13. Star Wars: Attack of the Clones Incredible Cross-Sections
  14. Luke Skywalker and the Shadows of Mindor
  15. Visual Guides make this the accepted scale
  16. Used, presumably accidentally, in The Cestus Deception
  17. Crosscurrent
  18. Star Wars (1977) 58
  19. 19.0 19.1 These units represent the rotational and orbital period, respectively, of Coruscant; they are also known as the "standard day" and "standard year". Local days and years on different planets may vary greatly. The Galactic Standard Calendar is used to calibrate these units together.
  20. 20.0 20.1 20.2 The New Jedi Order: Vector Prime
  21. Star Wars: The Old Republic: Rise of the Hutt Cartel
  22. Endor and the Moddell Sector
  23. Star Wars Episode IV: A New Hope novelization. It is unclear whether this is the same as a Coruscant Standard Carat or a different unit.
  24. Star Wars: The Roleplaying Game
  25. 25.0 25.1 Star Wars: X-Wing vs. TIE Fighter
  26. A Guide to the Star Wars Universe, Second Edition, Revised and Expanded
  27. Star Wars: Knights of the Old Republic: 4 million sangens of fuel were needed to destroy machinery near the Hrakert Rift.
  28. The Mandalorian Armor: See Imperial-class M-12 sweep bomb
  29. Shield of Lies: 640 millibars was the pressure in the Teljkon Vagabond
  30. Galaxy Guide 9: Fragments from the Rim, p. 11 mentions degrees in the description of offset brath bearings from true on a speeder.
  31. HoloNet News Weather
  32. Mentioned in The Black Fleet Crisis trilogy
  33. Star Wars: Revenge of the Sith Incredible Cross-Sections, p.11
  34. The New Jedi Order: Vector Prime p. 7
  35. Imperial troop transporter (story booklet)
  36. 36.0 36.1 36.2 36.3 Star Wars: Attack of the Clones Incredible Cross-Sections
  37. 37.0 37.1 Star Wars: Dark Forces
  38. Star Wars: Complete Cross-Sections, for TIE/sa bombers and TIE/LN starfighters
  39. Union 1
  40. Before the Storm
  41. Boba Fett: When the Fat Lady Swings
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