# All online calculators

- Humidification loads
This online calculator answers question "how to choose" humidifier, by calculating humidification requirements given initial and target relative humidity and building parameters

- Humindex
This calculator calculates Humindex, index used by Canadian meteorologists to describe how hot the weather feels to the average person, by combining the effect of heat and humidity.

- Hydrostatic pressure
This online calculator can solve hydrostatic pressure problems by finding unknown value in hydrostatic equation.

- Hyperbolic functions
Calculation of hyperbolic functions

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

- Ideal weight calculator using Body Mass Index
- Ideal weight calculator using Paul Broca formula
Ideal weight calculator using Paul Broca formula

- Imperial to Metric and Metric to Imperial measures of length converter
- Incircle of a triangle
This online calculator determines the radius and area of the incircle of a triangle given the three sides

- Indicators of variations
Calculation of variation - the coefficient of variation, dispersion, mean square deviation, etc.

- Inflation in Russia
Calculator of Russian inflation since 1991 to the present time. Based on the data of the Federal State Statistics Service of the Russian Federation. The data updated weekly.

- Ingredients. Proportional quantities
This online calculator recalculates quantities of ingredients for given proportions if quantity of one ingredient has changed

- Integer factorization. Trial division
Integer factorization using trial division algorithm.

- Interest on the deposit and inflation
- Inverse Hyperbolic Functions
Calculation of inverse hyperbolic functions of given argument

- Inverse of a matrix
Calculating inverse matrices via adjugate matrix

- Inverse trigonometric functions
This calculator determines values of inverse trigonometric functions (arcsine, arccosine, arctangent, arccotangent, arcsecant, arccosecant) and outputs it with different measurement units (degrees, radians, minutes, etc)

- Involute of an angle
Involute of an angle calculator and finding an angle by the given involute.

- Isogram checker
This online calculator can check if a word/phrase is an isogram.

- Issue number generator
Issue Number Generator for unnumbered magazines & comics & newspapers. If magazine did not print issue numbers, only dates, it can number them all, f.e. all Sundays starting with specified date up to specified date