20R Sizes is a standard dimension that usually used for a photography or other material such as glossy photo paper. 20R Size is a common size that included in R Series. This 20R size can be determined in unit of measurement in mm (millimeter) and can be converted into other units as well such as cm (centimeter) or inch (inches). You can see the image illustration of 20R Photo Size for reference and more detailed below.
The R Photo Print Sizes are 2R, 3R, 4R, 5R, 6R, 8R, 10R, 11R, 12R, 14R, 16R, 20R, 22R, 24R, 30R. It is commonly used for photo types of paper or photography to print photo and various other sizes such as postcard, passport photo size. The R sizes is also can be used in some application such as Photoshop and Microsoft Word. At present there are many types of photo paper that are often used to print photos, for example glossy photo paper.
Unlike A Series paper sizes based on ISO standard, the aspect ratios of photographic prints vary, so exact scaling of prints is not always possible. However, there are some logical correspondences between the sizes in R Series. Below are 20R Photo Print Sizes determined in unit of mm, cm, inch. To get a value in cm (centimeter), you can convert the value of mm to cm by divided by 10.
Here is 20R Photo Sizes in units of mm, cm, inch:
20R size in mm
- 20R size in mm is 508 x 609 millimeter.
20R size in cm
- 20R size in cm is 50.8 x 60.9 centimeter.
20R size in inch
- 20R size in inch is 20 x 24 inches.
Table of 20R size in mm, cm, inch
|20R||508 x 609||50.8 x 60.9||20 x 24|
20R Sizes Unit of Measurements
A unit of measurement is a definite magnitude of a value, defined and adopted by convention that is used as a standard for measurement of the same kind of value. Any other quantity of that kind can be expressed as a multiple of the unit of measurement.
mm stands for millimeter (American spelling) or millimetre (SI spelling) is the size of the unit of length in the metric system, that is the basis of the length measurement. 1 mm is equal to 0.1 cm.
cm stand for centimetre (international spelling as used by the International Bureau of Weights and Measures) or centimeter (American spelling) is a unit of length in the metric system, equal to one hundredth of a meter. cm being the International System of Units prefix for a factor of one per a hundred. cm is the base unit of length for cgs (centimetre–gram–second) system of units.
Inch (plural: inches, abbreviation: in or ″) is a unit of length in the imperial and United States customary systems of measurement, now formally equal to one per thirty six yard but usually understood as one per twelve of a foot. Derived from the Roman uncia, “inch” is also sometimes used to translate related units in other measurement systems. Traditional standards for the exact length of an inch have varied in the past, but since the adoption of the international yard during the 1950s and 1960s it has been based on the metric system and reckoned as exactly 2.54 cm.
Note: Photo paper is widely used throughout the world. R Series Photo Print Sizes is the standard size commonly used in various countries.