Calcum

Big Number Calculator

This is the spreadsheet calculator which serves the need of calculations with big numbers i.e. numbers with 64-bit precision or approximately 19-digits decimal precision.

Features

Calcum offers simplified syntax for mathematical operations: they look like regular operators in a typical math formula. The app also handles raw text.

Calcum supports several predefined arithmetic and string functions.

Additional functionality can be implemented by custom functions. You can write them using built-in operators and functions.