Examples for

# Mathematical Constants

Wolfram|Alpha has knowledge of a wide variety of mathematical constants, including π, e, the Euler–Mascheroni constant and many more.

### Constants

Query known mathematical constants by name.

#### Compute the value of a mathematical constant:

### Calculations with Constants

Use named mathematical constants like any other value, specifying them by name.

#### Do computations involving constants:

### Decimal Approximations

Find decimal approximations for mathematical constants.

#### Compute the value of a constant to a specified number of digits:

### Representations of Constants

Express known mathematical constants in alternative forms.