# All online calculators

- Petroleum product density
Petroleum product density conversion, according to GOST 3900-85

- Pigpen cipher decoder
This online calculator can decode messages written in the pigpen cipher

- Pipe cold bending. Flexure depth with main shaft.
Calculates the section flexure depth with pipe bender or bending machine to obtain given parameters.

- Plane angles measurement systems
- Playfair cipher
This online calculator encrypts and decrypts a message given Playfair cipher keyword. Non-alphabetic symbols (digits, whitespaces, etc.) are ignored.

- Points of the compass
This online calculator outputs compass point given direction angle in degrees. Different compass roses (4, 8, 16, 32, 128-wind compass roses) are supported.

- Poisson Distribution. Probability density function, cumulative distribution function, mean and variance
This calculator calculates poisson distribution pdf, cdf, mean and variance for given parameters

- Polygon area
Online calculator which calculates area of a polygon given lengths of polygon sides and diagonals which split polygon to nonoverlapping triangles

- Polynomial division
This calculator divides one polynomial by another polynomial.

- Polynomial Greatest Common Divisor
The calculator gives the greatest common divisor (GCD) of two input polynomials.

- Polynomial multiplication
This calculator multiplies two univariate polynomials.

- Polynomial root isolation
The calculators isolates real roots of the input univariate polynomial using Sturm and VAS-CF methods.

- Polynomial roots
The calculator solves polynomial roots of any degree. For small degree polynomials analytic methods are applied, for 5-degree or higher the polynomial roots are estimated by numerical method.

- Polynomial Taylor Shift
The calculator evaluates Taylor shift of the given polynomial using Shaw and Traub algorithm.

- Pounds to Kilogramms convertion and vice versa
This online calculator can be used for convertion of kilogramms to pouns, ounces and grains as they are used in USA or UK.

- Power into Torque and vise versa
This online calculator turns power into torque and vise versa

- Power to the People
Power units converter.

- Pregnancy due date
Pregnancy due date Calculator by the first day of the last period

- Pressure over a surface
This online calculator computes pressure, cause by given mass over given surface in gravity field. Result is displayed using different units of pressure

- Pressure units converter
Calculator which converts units of pressure