Online calculators

Online calculator catalog
Life 124
	Calendar Gregorian to fixed date, Days between dates. The historical version., Coptic calendar, Week days calculator, 365 days calendar date to Gregorian date, ... +14
	Date and Time Week Number Calculator, How many days are there between two dates?, Ancient Egyptian Calendar, Time Interval Calculator, Time to Earn Calculator: Calculate Work Hours for Desired Income, ... +60
	Health Weathering of alcohol concentration in the blood, Determination of the baby's sex, Coronavirus disease epidemic in different countries, Lorenc Ideal Weight Calculator, Proportional Body Calculator: McCallum's Formula, ... +13
Professional 325
	Computers Conversion of fractional numbers between numeral systems, Regular expression tester, Information gain calculator, Audio file waveform, Text file encoding, ... +60
	Engineering Flagstone Paving Calculator, Grain Drying with Natural Air, The amount of material for the mesh, Baffle Plate Gap Calculator, Tank Volume Calculators, ... +34
	Finance Annuity Calculator, The Central Bank of Russia exchange rate difference, Price Comparison Per Square Meter Calculator, Labor retirement pension amount (for Russia), Real interest rate using Fisher equation, ... +30
	Image processing Color to Grayscale Conversion, Color image to black and white image, Morphological filters, Median filter, Jpeg image meta-data, ... +6
	Navigation Prospect distance from the ground and line of sight distance between two observers, Points of the compass, Russia's regional registration plates, City objects observation, Compass point between two locations, ... +15
	Statistics Seasonal fluctuations. Seasonal indices. Method of simple averages, Paired Sample t-Test, Number to Probability, Analytical performance indicators, Text fitness, ... +32
	Telecommunications Number of agents in a call center, Morse Code Converter: Translate and Decode Messages, Morse-ify and Modify., VOIP call bandwidth, ... +1
	Units converters Expressing length through different units, Speed Converter, Inches to Pixels and Pixels to Inches Converter, Ton-kilometer. Conversion based on the cost of a kilometer, Exotic length units, ... +19
	Сryptography Calculating the partial derivative by its definition, Compound interest including commissions on the loan amount, Old Russian money, The Verhulst model, Apartment sale tax in Russia, ... +83
Study 420
	Astronomy Dates of the beginning and end of polar night and polar day at a given latitude, Zero Shadow Day, Shadow length,
	Chemistry Molar Mass Calculator, Concentration of analyte with uncertainty analysis for replicate titrations, Chemical equation balancer, Dilution of solutions, pH of a solution calculator, ... +20
	Math Tank volume, Greatest Common Factor Calculator for Three or More Numbers, The area of a convex polygon from the coordinates of the vertices on the plane, Random Matrix Generator, Moment of Inertia, ... +310
	Physics Temperature Scale Converter, Gas concentration from ppm to mg/m³ and vice versa, Wind Energy and Wind Power Calculator, Capacitor in Direct Current Circuit, Thermodynamics – calculator for solving mixing problems, ... +61

990 calculators in total.

Online calculator

A web-based tool or program accessible via internet browsers, designed to perform mathematical calculations (e.g., arithmetic, algebraic, or scientific computations). Users interact with it through a web page interface without requiring software installation.

planetcalc.com, 2008.

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Online calculator catalog

990 calculators in total.

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Online calculator