Calculating the antilog of a number is the inverse of calculating the logarithm of a number. One is capable of determining the base "b" antilog of a number "x" by calculating the value b^x, or b to the power of x.

Common bases used when calculating antilog are base 10 and base e. For example, the base 10 antilog of the number 3 is equal to 10^3, or 10*10*10 = 1000. The base "e" antilog of the number 3 is equal to e^3, or approximately 20.0855. Some buttons or series of buttons on calculators that represent antilog include LOG-1, 10^x, ALOG and INV LOG. Also, the e^x button calculates the natural antilog. The antilog of a logarithm of a positive number "x" is equal to x, assuming that the antilog and log use the same base. For example, a base 10 antilog of "log 3" is equivalent to 10^(log 3), which equals 3.