# Mathematical Constants and Identities Calculator

<-- Enter math constant expression

Evaluate and explain this math constant
pi

## Explain pi

You entered Archimedes Constant π, the ratio of the circumference of a circle to the diameter
This constant is approximated at 3.1415926535898
From radians to degrees, we have π = 180°

This constant is approximated at 3.1415926535898

### How does the Mathematical Constants and Identities Calculator work?

Free Mathematical Constants and Identities Calculator - Calculates and explains various mathematical constants such as:
* Gelfonds (Gelfond‘s) Constant
* Eulers Constant

This calculator has 1 input.

### What 3 formulas are used for the Mathematical Constants and Identities Calculator?

1. I = √-1
2. e = 2.71828183
3. π = 3.14159265359

For more math formulas, check out our Formula Dossier

### What 3 concepts are covered in the Mathematical Constants and Identities Calculator?

constant
a value that always assumes the same value independent of how its parameters are varied
identity
an equality that holds true regardless of the values chosen for its variables
imaginary number
a real number multiplied by the imaginary unit i, which is defined by its property i2 = -1.