All online calculators

• How many weeks are between two dates

  This calculator determines number of weeks between two given dates

• How many workdays between two dates?

  The calculator evaluates number of working days and holidays for a period of time. The calculator based on the U.S. federal holidays table recognised in most states.

• HTML table to JSON array

  Th calculator converts the html table code to JSON array with optional data transpose and compression. It also visualizes numeric data on chart.

• Huffman coding

  This online calculator generates Huffman coding based on a set of symbols and their probabilities

• 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

• Index of Coincidence

  This online calculator calculates index of coincidence (IC, IOC) for the given text

• 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
• Intersection of two circles

  This online calculator finds the intersection points of two circles given the center point and radius of each circle. It also plots them on the graph.