The notation 1.23E + 4 stands for 1.23 x 10⁺⁴ = 0.000123.

from \ to	= __ feet	= __ inches	= __ meters	= __ miles	= __ yards
foot		12	0.3048	(1/5280)	(1/3)
inch	(1/12)		0.0254	(1/63360)	(1/36)
meter	3.280839...	39.37007...		6.213711...E - 4	1.093613...
mile	5280	63360	1609.344		1760
yard	3	36	0.9144	(1/1760)

To use: Find the unit to convert from in the left column, and multiply it by the expression under the unit to convert to.
Examples: foot = 12 inches; 2 feet = 2x12 inches.

Useful Exact Length Relationships

mile = 1760 yards = 5280 feet
yard = 3 feet = 36 inches
foot = 12 inches
inch = 2.54 centimeters