Online calculators

Online calculator catalog
Life 124
	Calendar Coptic calendar, Ahargana day count to the Gregorian date, 365 days calendar date to Gregorian date, Indian calendars, Ethiopian calendar, ... +14
	Date and Time Date Interval Calculator, World Time Calculator, Hebrew calendar, Time between two dates with time zone, Time to Earn Calculator: Calculate Work Hours for Desired Income, ... +60
	Health Ideal weight calculator using Paul Broca formula, Strength of alcoholic cocktail, Ideal Weight Calculator, Body Proportions Calculator, Proportional Body Calculator: McCallum's Formula, ... +13
Professional 325
	Computers Text Filter with Regex, Substitution cipher tool, Shannon-Fano coding calculator, Shannon Coding Calculator, Text file encoding, ... +60
	Engineering Baffle Plate Gap Calculator, Heat Index Calculator, Tank Volume Calculators, Trapezoid - Shaped Throat Opening, Square Stack Calculator, ... +34
	Finance Simple Interest Daily Rate, Inflation in Russia, Price Comparison Per Square Meter Calculator, Simple Interest, Real interest rate using Fisher equation, ... +30
	Image processing Morphological filters, Image Flip & Rotate, Box filters for image processing, Color image to black and white image, Color to Grayscale Conversion, ... +6
	Navigation Compass, magnetic and true course calculator, Prospect distance from the ground and line of sight distance between two observers, Earth Radius by Latitude (WGS 84), Tidal gate calculator (Rule of twelfths), Compass point between two locations, ... +15
	Statistics Paired Sample t-Test, Time Series Autocorrelation function (ACF), Sсhorygin similarity coefficient for a series of samples, Number to Probability, Mann-Whitney test, ... +32
	Telecommunications VOIP call bandwidth, PBX channel number calculation, Number of agents in a call center, Morse Code Converter: Translate and Decode Messages, ... +1
	Units converters Display aspect ratio and dimensions, Exotic length units, Cubic meters of wood, Height in the old Russian system of measures, Conversion of pounds into inches, ... +19
	Сryptography Inkscape SVG cleaner, Calculadora Blogger Post, piscina, Count the number of separated values in the list, Tips and tricks #3: How to make calculator with custom errors, ... +83
Study 420
	Astronomy Shadow length, Declination and maximum altitude of the Sun above the horizon on a given date, Dates of the beginning and end of polar night and polar day at a given latitude,
	Chemistry Alcohol amount in the aqueous alcohol solution, Molarity to molality and vice versa, Molar mass of the substance, Fertilizing, pH of a solution calculator, ... +20
	Math 3x3 Equation Solver, Linear Diophantine Equations Solver, Combinations generator, Polynomial Taylor Shift, The Greatest Common Divisor (GCD) and the Least Common Multiple (LCM) of several numbers, ... +310
	Physics Dew Point Calculator, The waves and the wind. Calculation of wave characteristics, Tips and tricks #5: How to show/hide input and output controls in a calculator, CaCl2 ppm to chlorides WPS ppm converter, Gravity Pressure Calculator, ... +61

990 calculators in total.

Latest calculators

2025-06-13 11:24:55 Moment of Inertia
2025-06-11 09:46:02 Gaming Raid Time Converter: Simplify Global Event Scheduling
2025-05-31 11:41:57 Dart Score Calculator: Master 501, 301 & 301 Double-In Games
2025-05-28 22:47:22 Bill Splitter - Simplify Group Expenses with Ease
2024-09-09 07:05:59 Count the number of separated values in the list

Latest requests

2025-03-29 23:14:46 Creative
2024-12-12 23:39:16 Soul Calendar dating calculator
2024-10-12 17:27:18 Ayanamsha
2024-10-10 19:46:38 Week number generator from any given date in the past and into the future
2024-10-10 19:45:49 Week number generator from any given date in the past and into the future

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2025-06-10 11:19:28 Numbered list maker (4)
2025-05-30 19:31:48 How many days are there between two dates? (975)
2025-05-20 09:46:58 Chemical equation balancer (116)
2025-05-13 16:28:04 Time Span Calculator (2814)
2025-04-12 06:13:21 Quick Sum Calculator (9)

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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PLANETCALC Online calculators

Online calculator catalog

990 calculators in total.

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Online calculator