Awasome Most Common Size Garden Hose References. The diameter of a garden hose is measured in inches, and the most common sizes are 1/2 inch, 5/8 inch, and 3/4 inch. The most common hose size ranges between 3/4 and 5/8 inches (which we’ll discuss more below), with the former being better for water flow, and the latter being better for water.
The most common size garden fittings come with is 5/8†and 11.5nh( 5/8†being the diameter while 11.5nh is the thread pitch). While the flow rate increases with the diameter, water pressure does not. Garden hose diameters generally range from 1/2 to 3/4.
