Find Formula From Decimal Number - Examples

See how our closed form finder can easily identify numerical constants. Try copying any of these floating-point values into the calculator to verify the results.

Pi (π)

The ratio of a circle's circumference to its diameter.

3.14159265359
π

Euler's Number (e)

The base of the natural logarithm.

2.71828182846
e

Golden Ratio (φ)

A famous irrational number found in nature and art.

1.61803398875
(1+√5)/2

Catalan's Constant

Occurs in estimates of combinatorial objects and integrals.

0.91596559417
G

Apéry's Constant

The sum of the reciprocals of the positive cubes.

1.20205690315
ζ(3)

Gaussian Integral

The integral of e^(-x^2) from 0 to infinity.

0.88622692545
√π/2

Have your own numerical value?

Use our PSLQ calculator alternative to recognize the mathematical constant.