PDF (The Portable Document Format) is a file format developed in the 1990s to present documents, including text formatting and images, in a manner independent of application hardware, software, and operating systems. Based on PostScript language, each PDF file encapsulates a complete description of a flat, fixed-layout document, including the text, fonts, vector graphics, raster images and other information needed to display it. PDF was standardized as an open format, ISO 32000, in 2008, and does not require any royalties for its implementation.
Unit converter - a practical tool for you
Common unit converters
First of all it is important to describe, what are the most important type of measurement units. Length, mass, volume, area, temperature, pressure, energy, power, speed and other popular measurement unit converters. As you can see there are a lot of units of measurement. Sometimes it might be hard to convert for example yards to meters or inches to centimeters. There are obviously many other examples. In our opinion one of the worst cases is pounds to kilograms. It is really hard to convert both units in a fast way.