Earth measurements were the standard units of measure used in the United Federation of Planets.
A meter (m) was the fundamental SI unit of length, defined as the distance traveled by light in a vacuum in 1/299,792,458 second.
In the Imperial units system, 1 foot ≡ 0.3048 m.
A millimeter (mm) was an SI unit of length equal to 1/1,000 of a meter.
1 mm ≈ 0.03937 inches.
A centimeter (cm) was an SI unit of length equal to 1/100 of a meter.
1 cm ≈ 0.39370 inches.
A kilometer (km) was an SI unit of length equal to one thousand meters.
1 km ≈ 0.62137 miles.
A micron was another name for micrometer (µm), an SI unit of length equal to 1 millionth of a meter (1×10−6 m).
1 mil ≡ 25.4 μm.
(Main article: Mile)
A mile (mi) was originally one thousand paces, or 5,000 Roman feet (∼4,850 Imperial feet). A later British reform changed the mile to 5,280 Imperial feet so that it would equal eight furlongs.
1 mi ≡ 1.609344 km.
Nautical mile Edit
A nautical mile was based on the length of one minute of arc of a great circle.
1 nautical mile ≡ 1,852 m (∼6,076.12 ft)
A foot (ft, plural feet) was an Imperial unit of length equal to twelve inches, or one third of a yard.
1 ft ≡ 0.3048 m.
An inch (in) was originally based on the width of the average man's thumb, or the length of three barley-corns. It was later redefined based on SI units.
1 in ≡ 2.54 cm.
Light year Edit
(Main article: Light year)
One light year was the distance that light traveled in one Earth year. It was approximately equal to 9.46×1015 meters, or 5.88 ×1012 miles.
A kilogram (kg) was the fundamental SI unit of mass.
In the Imperial units system, 1 pound ≡ 0.45359237 kg.
A gram (g) was an SI unit of mass equal to 1/1,000 of a kilogram.
1 ounce ≡ 28.349523125 g.
A milligram (mg) was an SI unit of mass equal to 1/1,000 of a gram.
See: Time measurements
A liter (L or l) was a derived SI unit of volume, equal to 1/1,000 cubic meters (1 cubic decimeter).
In the Imperial units system, 1 gallon ≡ 4.54609 L (∼277.42 cubic inches).
In the US system, 1 gallon ≡ 231 cubic inches ≡ 3.785411784 L.
A milliliter (ml) was an SI unit of volume equal to 1/1,000 of a liter.
In the Imperial system, 1 fluid ounce ≡ 28.4130625 ml.
In the US system, 1 fluid ounce ≡ 29.5735295625 ml.
A cc (cubic centimeter, official cm3) was a measure of volume equal to one cubic centimeter (cm3), which was also equal to one milliliter (ml). The cc was a common term for milliliters used in measuring the dosage of liquid medicines by volume.
1 cubic inch ≡ 16.387064 ml ≡ 16.387064 cc.
Cubic meter Edit
When the crew was forced to take shelter in the ship's catwalk, T'Pol allowed Doctor Phlox fifteen cubic meters of space for his medical supply. Phlox later discussed this with T'Pol and she allowed him five more cubic meters to what Phlox answered, "my Edosian slugs thank you." (ENT: "The Catwalk")
A gross was equal to a dozen dozen.