What is the inch? Diagonal 7 inch how much in centimeters?

Every person in life has a large variety of screens. Mobile phones, tablets, TVs, monitors, laptops – everywhere there are screens which, in this case, measured in inches.

However, for many people this measurement is problematic, because everyone is used to compute the distances in centimeters. And what is equal to 1 inch? How to understand what will be the diagonal of the TV is 44 inches? These questions torment many, so it's time to find the answers. After reading this article, you don't need to think, looking at the 7 inch: “How many in centimeters?” - you will be able to calculate your own.

What is an inch?

So you have, for example, a 7-inch. How many in centimeters? To answer this question very easily if you know what is inch. Later you will learn much more information on why there is this measure of length. It is more important just to answer the basic question.

If you need to take a distance or length from inches to centimeters more than usual, you should remember that one inch equals 2.54 centimeters. Thus, for example, you want to buy a tablet, which diagonal – 7 inches. How many inches is the diagonal? Performing a simple mathematical operation, you can easily find out what is 17.78 centimeters.

Origin of term

Of Course, now everyone wants to know where it came from such a measurement. There are many different versions, but the most basic and plausible that, in accordance with which the inch was considered to be the width of the thumb of an adult male. This theory is supported by at least the fact that with Dutch duim translates as “thumb”.

However, there are different stories about how such a measure of length were used in different countries. Inch is 1/36 of a yard, which, in turn, was recognized for official a measure of the length – from tip of nose to the thumb of the extended hand of king Henry the First. There were also legitimate inches, the length of which was equal to the length of three barleycorns. In General, the options are many, but most of them are somehow connected with the thumb.

What is measured in inches

Accordingly, the inches were slightly different in each country, and in some, there are several on the national variations of an inch. Today, the standard accepted English inch is used in the United States. So now, at the sight of the fact that the screen has a diagonal 7 inches, “How many in centimeters?” is not the question that you ask, because you already know the answer.

All the equipment is measured in inches such – in most cases it screens, but can also be, for example, floppy disks. But in other areas also sometimes used the inches in the world – for example, when measuring the diagonal of motor drives.