How to Convert 5mm to Inches
5 mm ÷ 25.4 = 0.1969 inches. To find the nearest 32nd, multiply by 32: 0.1969 × 32 = 6.3, which rounds to 6/32.
On a Tape Measure
Standard US tape measures show marks at every 1/16 inch. The nearest mark to 5mm is the 3/16″ mark. For rough layout work, use the 1/4″ mark.