Online calculator catalog
Life 120
	Calendar   365 days calendar date to Gregorian date,   Indian calendars,   Gregorian date to Hindu mean solar calendar,   Coptic calendar,   Hindu mean lunisolar calendar to Gregorian date, ... +14
	Date and Time   Time scales,   Russian non-working days,   How many months are there between two dates?,   Ancient Egyptian Calendar,   Date plus days, ... +59
	Health   Weathering of alcohol concentration in the blood,   Lorenc Ideal Weight Calculator,   The basal metabolic rate,   McDonald's meal nutrition facts,   Daily Calorie Rate, ... +13
Professional 247
	Computers   Shannon Entropy,   Text compression using Huffman coding,   IP Address and Subnet Mask Calculator (IPv4),   Line Reverser,   Vigenère cipher, ... +60
	Engineering   The amount of material for the mesh,   Throat Calculator for Cylindrical Tanks,   Relations between Mass, Length, Width, and Area Density of Fabric,   Weight-to-Volume Calculator,   Square Door Tank Volume, ... +32
	Finance   Annuity Calculator,   Progressive tax,   Russian Central Bank Exchange Rate Converter,   How much does cash weigh?,   USD to rubles and vice versa by the Central Bank of Russian Federation exchange rate, ... +30
	Image processing   Digital images parameters comparison,   Image color set,   Color to Grayscale Conversion,   Morphological filters,   Jpeg image meta-data, ... +6
	Navigation   Distance between two cities,   Compass, magnetic and true course calculator,   Compass point between two locations,   Points of the compass,   Course angle and the distance between the two points on loxodrome (rhumb line)., ... +15
	Statistics   Time Series Autocorrelation function (ACF),   Text fitness (version 2),   Two sample t-Test,   Negative Binomial Distribution. Probability density function, cumulative distribution function, mean and variance,   Spearman's Rank Correlation Calculator, ... +27
	Telecommunications   Morse Code Converter: Translate and Decode Messages,   PBX channel number calculation,   Morse-ify and Modify.,   VOIP call bandwidth, ... +1
	Units converters   Imperial to Metric and Metric to Imperial measures of length converter,   Speed Converter,   Ton-kilometer. Conversion based on the cost of a kilometer,   Degrees-minutes-seconds to decimal degrees conversion and vice versa.,   Nautical Units Converter, ... +19
	Сryptography   Vigenère cipher breaker,   Kasiski test,   A1Z26 cipher,   Index of Coincidence,   Pigpen cipher decoder, ... +12
Study 387
	Chemistry   Molarity calculator,   Convert moles to liters and liters to moles,   Peptides dissolution calculator.,   Convert grams to moles and moles to grams,   Raoult's Second law and the freezing temperature., ... +16
	Math   Inverse Hyperbolic Functions,   Fixed-point iteration method,   Spherical sector,   Eigenvector calculator,   Euler method, ... +299
	Physics   Buoyant Force Calculator - Weight of Displaced Liquid,   CaCl2 ppm to chlorides WPS ppm converter,   Saturation vapor pressure,   Vertical Collision Kinematics Calculator,   Gas concentration from ppm to mg/m³ and vice versa, ... +49