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Glossary » Units » Angle » Hour of Arc
Hour of Arc is a unit in the category of Angle. It is also known as hours of angle, hour of angle. Hour of Arc has a dimension of a. It can be converted to the corresponding standard SI unit rad by multiplying its value by a factor of 0.2617993878.
Note that the seven base dimensions are M (Mass), L (Length), T (Time), Q (Temperature), N (Aamount of Substance), I (Electric Current), and J (Luminous Intensity).

Other units in the category of Angle include Arc Minute (minute of Arc) ('), Arc Second (second of Arc) ("), Circumference, Degree (°), Gon (gr), Grade (gr), Milliradian (mrad), Percent (%), Quadrant (angle), Radian (rad), Revolution (rev), and Sign.

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