Index calculation An exponential calculator is a tool for performing mathematical calculations using exponents. An exponent represents the power of one number to the power of another. The symbol "^" or "**" is used. The exponential calculation requires two numbers: cardinality and exponent. For example, "2^3" is 2 to the cube and "5^4" is 5 to the fourth power. Exponential calculators are used in various fields such as scientific computing and engineering. xa ab a ☓ a .... ☓ a Multiply a by b times.