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2. Unit of length - Wikipedia

   en.wikipedia.org/wiki/Unit_of_length

   The basic unit of length in the imperial and U.S. customary systems is the yard, defined as exactly 0.9144 m by international treaty in 1959. [2] [5] Common imperial units and U.S. customary units of length include: [6] thou or mil (1 ⁄ 1000 of an inch) inch (25.4 mm) foot (12 inches, 0.3048 m) yard (3 feet, 0.9144 m)

3. List of conversion factors - Wikipedia

   en.wikipedia.org/wiki/List_of_conversion_factors

   = 1 853.7936 m: mile (international) mi ≡ 80 chains ≡ 5280 ft ≡ 1760 yd: ≡ 1 609.344 m: mile (tactical or data) ≡ 6000 ft: ≡ 1 828.8 m: mile (telegraph) (H) mi ≡ 6087 ft = 1 855.3176 m: mile (US Survey) mi ≡ 5280 US Survey feet ≡ (5280 × 1200 ⁄ 3937) m ≈ 1 609.347 219 m: nail (cloth) ≡ 2 + 1 ⁄ 4 in [4] = 0.057 15 m ...

4. Template:Convert - Wikipedia

   en.wikipedia.org/wiki/Template:Convert

   Converts measurements to other units. Template parameters [Edit template data] This template prefers inline formatting of parameters. Parameter Description Type Status Value 1 The value to convert. Number required From unit 2 The unit for the provided value. Suggested values km2 m2 cm2 mm2 ha sqmi acre sqyd sqft sqin km m cm mm mi yd ft in kg g mg lb oz m/s km/h mph K C F m3 cm3 mm3 L mL cuft ...

5. Foot (unit) - Wikipedia

   en.wikipedia.org/wiki/Foot_(unit)

   The foot (standard symbol: ft) [1] [2] is a unit of length in the British imperial and United States customary systems of measurement. The prime symbol, ′, is commonly used to represent the foot. [3] In both customary and imperial units, one foot comprises 12 inches, and one yard comprises three feet.

6. Mile - Wikipedia

   en.wikipedia.org/wiki/Mile

   The informal term "metric mile" is used in some countries, in sports such as track and field athletics and speed skating, to denote a distance of 1,500 metres (0.932 miles). The 1500 meters is the premier middle distance running event in Olympic sports. In United States high-school competition, the term is sometimes used for a race of 1,600 ...

7. United States customary units - Wikipedia

   en.wikipedia.org/wiki/United_States_customary_units

   For measuring length, the U.S. customary system uses the inch, foot, yard, and mile, which are the only four customary length measurements in everyday use. From 1893, the foot was legally defined as exactly 1200 ⁄ 3937 m (approximately 0.304 8006 m). [13] Since July 1, 1959, the units of length have been defined on the basis of 1 yd = 0.9144 ...

8. List of metric units - Wikipedia

   en.wikipedia.org/wiki/List_of_metric_units

   Metric units are units based on the metre, gram or second and decimal (power of ten) multiples or sub-multiples of these. According to Schadow and McDonald, [ 1 ] metric units, in general, are those units "defined 'in the spirit' of the metric system, that emerged in late 18th century France and was rapidly adopted by scientists and engineers.

9. League (unit) - Wikipedia

   en.wikipedia.org/wiki/League_(unit)

   From 1630 to 1718 a millia was 5,564 feet (1,696 metres), making a geographical league of four millias equal 22,256 feet (6,784 m or 3.663 modern nautical miles). But from 1718 through the 1830s the millia was defined as the equivalent of just over 5,210 feet, giving a shorter geographical league of just over 20,842 feet (6,353 m or 3.430 ...