Half of 11/16 inches is 11/32 inches (0.34375″, 8.73 mm).
How to Calculate It
Convert 11/16 to an improper fraction, divide by 2, then simplify. 11/16 = 11/16, divided by 2 = 11/32, simplified to 11/32.
On the Tape Measure
The mark at 11/32 inches (0.34375″) is a 1/32-inch mark found on many professional tapes. If your tape does not show 32nds, use the decimal 0.34375 with a digital caliper.
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.