Online calculator catalog
Life 121
	Calendar   Days between dates. The historical version.,   Gregorian date to the Ahargana day count,   ISO calendar,   Indian calendars,   Hindu mean lunisolar calendar to Gregorian date, ... +14
	Date and Time   Azimuth and solar elevation angle,   How much time between two dates?,   Gregorian calendar. Julian calendar. The calendar eras.,   Russian Working Days Calculator,   How many days are there between two dates?, ... +60
	Health   Body proportionality,   Coronavirus disease epidemic in different countries,   The basal metabolic rate,   Weathering of alcohol concentration in the blood,   Ideal weight calculator using Paul Broca formula, ... +13
Professional 325
	Computers   Shannon Entropy,   Unicode scripts and blocks,   Repeated Word Heatmap,   List Filter Calculator,   Regular expression tester, ... +60
	Engineering   Heat Index Calculator,   Throat Calculator for Cylindrical Tanks,   Liquid level in the tilted cylinder,   Barlow formula,   Internal forces diagrams for the two-support beam, ... +34
	Finance   Compound interest with an equal monthly investment,   Compound interest at a certain number of days,   Progressive tax,   Commission calculator,   Bank card number validation, ... +30
	Image processing   Image Flip & Rotate,   Watercolor Filter,   Color to Grayscale Conversion,   Color image to black and white image,   Morphological filters, ... +6
	Navigation   Course angles and distance between the two points on the orthodrome(great circle),   Course angle and the distance between the two points on loxodrome (rhumb line).,   Earth Distance Calculator,   Tidal gate calculator (Rule of twelfths),   Compass Points, ... +15
	Statistics   Negative Binomial Distribution. Probability density function, cumulative distribution function, mean and variance,   Palyi-Kownacki dominance index,   Seasonal Indices for Quarterly Data,   Number to Probability,   Chande momentum oscillator indicator, ... +32
	Telecommunications   PBX channel number calculation,   Morse Code Converter: Translate and Decode Messages,   Morse-ify and Modify.,   VOIP call bandwidth, ... +1
	Units converters   Wooden Pack Volume Calculator,   Plane angles measurement systems,   Pounds to kilograms conversion and vice versa,   Ton-kilometer. Conversion based on the cost of a kilometer,   Conversion between imperial and metric units of area, ... +19
	Сryptography   Old Russian money,   PATHFINDER cipher checker,   Ingresa las Medidas de tu Piscina y calcula los M3,   Compound interest rate calculator,   Land tax, ... +83
Study 419
	Astronomy   Dates of the beginning and end of polar night and polar day at a given latitude,   Declination and maximum altitude of the Sun above the horizon on a given date,   Zero Shadow Day,
	Chemistry   pH of a solution calculator,   Convert grams to moles and moles to grams,   Molar mass of the substance,   Molar volume,   Fertilizing, ... +20
	Math   Secant method,   Matrix Multiplication Calculator,   Selection of distribution,   3x3 Equation Solver,   Euler method, ... +309
	Physics   Wind Chill Index,   Surface tension. Weight and volume of the drop of liquid,   Petroleum product density,   Freefall distance problems solver,   Сonstant acceleration, ... +61