The number base converter is a program that converts a number from one base to another without altering its value. There are several types of numbers used in math, programming and computer science. For instance, decimal is base 10, binary is base 2, octal is base 8, and hexadecimal is base 16. Numbers in one of these systems can be difficult to convert to the other by hand, and can be hard to calculate in the other system if they are large. Using a number base converter will make it much faster because it will do the calculations automatically. This can be very useful for students who are working on number systems, programmers who are dealing with binary or hexadecimal numbers, and other people who have to work with digital data. Most of the converters will ask you only for the number, original base and target base. The outcome is then immediately shown and conversions are easier to verify and comprehend.