How to Convert 7mm to Inches
7 mm ÷ 25.4 = 0.2756 inches. To find the nearest 32nd, multiply by 32: 0.2756 × 32 = 8.82, which rounds to 9/32.
On a Tape Measure
Standard US tape measures show marks at every 1/16 inch. The nearest mark to 7mm is the 1/4″ mark. For rough layout work, use the 1/4″ mark.