# All online calculators

- 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

- Price based on running meter
This online calculator calculates the price of certain area based on price of running or linear meter

- Probability of given number success events in several Bernoulli trials
Gives probability of k success outcomes in n Bernoulli trials with given success event probability.

- Probability Urn simulator
This calculator simulates urn or box with colored balls often used for probability problems and can calculate probabilities of different events.

- Progressive tax
Calculates progressive tax according to tax rate table.

- Projection
Calculation of unknown parameters of projection using known parameters. Parameters are duration, maximum height, distance, initial velocity and angle.

- Proportion
This online calculator finds unknown member of proportion. Created by user's request

- Proportionality of body — McCallum's formula
- Prospect distance from the ground and line of sight distance between two observers
Calculates the prospect distance from height at observer and line of sight distance between two observers.

- Prueba2
- PSAT/NMSQT Practice Tests Score Calculator
This calculator helps you to score your official practice tests results.

- Pythagorean theorem calculator
Calculates the side length of a right triangle from two other sides using Pythagorean theorem. Created by user's request

- Quantity of heat
This calculator can find missing values in the relationship between heat and temperature: heat added or removed, specific heat, mass, initial temperature and final temperature

- Quartic equation solution
This calculator produces quartic equation solution using resolvent cubic.

- Quick Sum Calculator
This online calculator sums up entered integer numbers. Any symbol what is not a digit, for example, a space, a comma, a semicolon, etc, serves as a separator. It is useful when you need to sum up several numbers but do not have speadsheet program at hand.

- Racing laps table
This is generator of lap running order for kart racing. The goal is to let each racer to try each starting position/kart in random order.