Seven millimeters is equal to 0.27 inches, which is slightly more than one-fourth of an inch. As a fraction, 7 millimeters equals nine-thirty-second inches or 09/32 inches.
The inch and the millimeter come from the imperial and the metric systems of measurement, respectively. The equation to convert a metric measurement into an imperial one is to multiply the number of millimeters by 0.03937. An easy method is to use one of the many online calculators and conversion charts. Since the inch is a larger unit of measurement than the millimeter, the measurement will be a smaller number of inches than millimeters.