Online calculator catalog
Life 120
	Calendar   365 days calendar date to Gregorian date,   Gregorian date to the Ahargana day count,   Indian calendars,   Gregorian to fixed date,   Coptic calendar, ... +14
	Date and Time   Sobriety calculator,   Time. Total sum,   Jarvis march,   Week number of a given date,   How much time between two dates?, ... +59
	Health   The number of packs steroid you need for cycle,   Coronavirus disease epidemic in different countries,   Daily Calorie Rate,   The basal metabolic rate,   Proportionality of body — McCallum's formula, ... +13
Professional 245
	Computers   Binary file,   Automated Vigenère cipher decoder,   Audio file waveform,   Check Digit Mod 11 (ISBN-10 check digit),   Email extractor, ... +60
	Engineering   Calculation of weight by volume,   Laminate flooring. The calculation of the number of planks,   Film calculator,   Power to the People,   Equilibrium moisture content , ... +31
	Finance   Tax deductions from personal income tax,   Bank card number validation,   The calculation of amortization for tax purposes,   Nominal interest rates сomparison,   Effective interest rate, ... +30
	Image processing   Digital images parameters comparison,   Watercolor effect,   Box filters for image processing,   Color to Grayscale Conversion,   Jpeg image meta-data, ... +5
	Navigation   Prospect distance from the ground and line of sight distance between two observers,   Russia's regional registration plates,   Course angle and the distance between the two points on loxodrome (rhumb line).,   Flag semaphore signals,   Tidal gate calculator (Rule of twelfths), ... +15
	Statistics   Chande momentum oscillator indicator,   Two sample t-Test,   Mann-Whitney test,   Seasonal fluctuations. Seasonal indices. Method of simple averages,   Z-score from P-value, ... +27
	Telecommunications   Morse Code,   Morse code. Mutator,   Number of agents in a call center,   PBX channel number calculation, ... +1
	Units converters   Conversion of decimal number to other notations,   Conversion between imperial and metric units of area,   Cubic meters of wood,   Conversion of pounds into inches,   Plane angles measurement systems, ... +19
	Сryptography   Kasiski test,   Gravity Falls Bill's symbol substitution cipher decoder,   Caesar cipher with numbers,   Rail fence cipher,   PATHFINDER cipher checker, ... +12
Study 383
	Chemistry   Alcohol amount in the aqueous alcohol solution,   Molar volume,   Peptides dissolution calculator.,   Raoult's Second law and the freezing temperature.,   Molar mass of the substance, ... +15
	Math   Regular polygon, number of sides and length of side from incircle and circumcircle radii,   Angle between two vectors,   Gaussian elimination in complex numbers,   Luhn algorithm,   Proportion, ... +297
	Physics   Quantity of heat,   CaCl2 ppm to chlorides WPS ppm converter,   Battery discharge time depending upon load,   Determining air humidity with the psychrometric method,   Temperature scales, ... +50