Scientific Calculator: Constants

π

π (sometimes written pi) is a mathematical constant that is the ratio of any Euclidian circle's circumference to its diameter.

The approximate value of pi is:

Pi has many uses in mathematics, science and engineering, making it one of the most important constants. For some additional information about pi in mathematics (geometry), you can check the trigonometry section.

e

e is an important mathematical constant that is the base of natural logarithms.

The constant is the result of the following limit:

The approximate value of e is: