Half of 36 inches is 18 inches (18″, 457.2 mm).
How to Calculate It
Convert 36 to an improper fraction, divide by 2, then simplify. 36 = 36/1, divided by 2 = 36/2, simplified to 18.
On the Tape Measure
The mark at 18 inches (18″) is a standard mark on all tapes.
To find half of any tape measure measurement, enter it in TapeMath and tap the Half It button. The result appears instantly on the visual tape.