Qalculate! Bases is a small number base converter. Qalculate! Bases is a small utility for conversion between number bases using the Qalculate! library. It presents the user with a small dialog with entries for binary, octal, decimal and hexadecimal numbers. When a number or mathematical expression (using the full capabilities of Qalculate!) is typed in any of the entries the others are updated as-you-type.