A quarter inch is a unit of measurement that is equal to one-fourth of an inch. It is commonly used in various industries such as construction, woodworking, and design where precision is important. A quarter inch is not the same as one inch, and it takes four quarter inches to make one inch. Therefore, if you have a measurement of 0.25 inches, it is only a quarter inch, not a full inch. To convert quarter inches to inches, divide the number of quarter inches by 4. For example, if you have a measurement of 12 quarter inches, you can convert it to inches by dividing 12 by 4, which gives you 3 inches.