# All online calculators

- Effective interest rate
- Ellipsoid
Calculates ellipsoid and spheroid volume and surface area.

- Email extractor
This online calculator parses emails from block of text using regular expression

- Energy measurement units
Energy unit converter (joules, kilowatt-hour, kilogram force per meter, horsepower per hour, kilocalories)

- Equation of a circle passing through 3 given points
This online calculator finds equation of a circle passing through 3 given points

- Equations of a circle with given center and radius in different forms
This online calculator displays equations of a circle in standard form, in parametric form and in general form given center and radius of a circle

- Equilibrium moisture content
The calculator gives the wood equilibrium moisture content by given temperature and relative humidity.

- Estimated Mean of a Population
This online calculator allows you to estimate mean of a population using given sample

- Evaluating expressions
This online calculator substitutes a specific value for each variable, and performs the operations, evaluating the given expression.

- Events timeline
This online calculator analyzes and summarizes sequence of events on a timeline. It calculates days passed between events, as well as statistical data, e.g. a mean time between events, a variance and a deviation

- Exotic length units
Converter from exotic length units to meters

- Exponential Moving Average
Exponential Moving Average calculation by candles

- Exponential smoothing
Exponential smoothing theory

- Expressing length through different units
Calculator expresses a given length through the different units.

- Extended Euclidean algorithm
This calculator implements Extended Euclidean algorithm, which computes, besides the greatest common divisor of integers a and b, the coefficients of Bézout's identity

- Extract domain names from URLs and count unique names
This calculator extracts domain names from URLs and counts unique names

- Factorial
Online calculator computes factorial of given positive integer (up to 170!)

- Factoring calculator
This calculator generates all pairs of factors for given integer.

- False position method
False position method - is a root-finding algorithm that uses a succession of roots of secant lines combined with bisection method to approximate a root of a function f.

- Family budget planner
The calculator helps to plan personal finances.