All calculators sorted alphabetically.
Tools that are neither a table nor a converter - deposit calculator, electric cost calculator, taxes calculator etc.
Various kinds of tables - shoe size table, tires symbols, SI units table etc.
Related to finances - gross to net converter, earnings calculator, tools for self-employments, days to state pension age, etc.
Related to physics - SI units table, energy units converter, momentum formula etc.
Related to mathematics - columnar addition, fractions operations, law of sines etc.
Various kinds of converters - kilograms to pounds, centimeters to feet, Celsius degrees to Fahrenheit etc.
Tools for employee and employers - gross to net salary converter, number of vacation days calculator, insurance contribution rates etc.
Helpful while running a household - energy cost calculator, painting cost calculator, tires symbols etc.
Related to car and travel - fuel consumption & cost, tax-free mileage allowance etc.
Related to computers - data storage units converter, MTU table, IP calculator etc.
Related to time - how many days to holiday, number of working days etc.
Related to chemistry - chemical elements, atoms, ions, compounds and their properties, periodic table, solution concentration etc.
Related to text or characters processing - ASCII table, ascii to number converter etc.
Related to health - BMI calculator, calories calculator etc.
Related to sound and audio - sound generators, oscilloscope, spectrum analyzer etc.