- Golden ratio
This calculator determines proportions according to golden ratio

- Gregorian calendar. Julian calendar. The calendar eras.
The calculator convers julian calendar date to gregorian calendar date taking in account the calendar era.

- Hill cipher
This calculator uses Hill cipher to encrypt/decrypt a block of text

- Hip roof calculator
This calculator will help you estimate hip roof parameters, including rafters and roof area

- Histogram
Histogram generation according to input data. The number of groups is determined by the Sturgess formula, other formulas or set manually

- Histogram group number
Sturges formula and other methods of determining the number of groups in histogram generation

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

- How many days are there between two dates?
This is simple day calculator which determines number of days between two dates.

- Huffman coding
This online calculator generates Huffman encoding for given frequency of occurrence of symbols.

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

- Hyperbolic functions
Calculation of hyperbolic functions

- Ideal weight calculator using Body Mass Index

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.

- 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.

- Inverse Hyperbolic Functions
Calculation of inverse hyperbolic functions of given argument

- Inverse of a matrix
Calculating inverse matrices via adjugate matrix

Pages: