- Hyperbolic functions
Calculation of hyperbolic functions

- Inverse Hyperbolic Functions
Calculation of inverse hyperbolic functions of given argument

- Laminate flooring. The calculation of the number of planks
The calculation of the number of planks requiered

- Level of liquid in the cylindrical tank, AKA Quarter-Tank Problem
This online calculator finds the height above the bottom of a horizontal cylinder (such as a cylindrical gas tank) to which the it must be filled for it to be full at specified percentage (for example, one quarter full amounts)

- Liquid level in the tilted cylinder
Сalculates the level of the liquid in a tilted cylindrical tank with the tank parameters and the liquid volume.

- Logarithm
This online calculator outputs logarithm of a number to a given base, as well as natural logarithm and common (decadic) logarithm

This calculator will help you to estimates number of flagstones needed for paving

- Math equation simplification
Simplifies math equation with single variable (x). In eqation you may also use integer and fractional numerical constants arithmetic operations, trigonometric and hyperbolic functions.

- Mathematical calculator
Mathematical calculator is used for evaluation math expressions with arithmetic operations (+-/*^) and functions: sqrt - square root, exp - exponential function, lb - binary logarithm, lg - decimal logarithm, ln - natural logarithm, sin - sine, cos - cosine, tan - tangent, cot - cotangent, sec - secant, csc - cosecant, arcsin - arcsine, arccos - arccosine, arctan - arctangent, arccot - arccotangent, arcsec - arcsecant, arccosec - arccosecant and others

- Median of a triangle
This online calculator computes median of a triange given triangle sides

- Number of flagstones to units of area and vice versa
These calculators convert entered number of flagstones to area size and vice versa - calculate number of flagstones needed to cover entered ara size. Metric and imperial units are supported

- One-variable function graph
This online calculator plots one-variable function graph given function formula and range of variable

This online calculator checks lines' slopes to see if they are parallel or perpendicular

- Petroleum product density
Petroleum product density conversion, according to GOST 3900-85

- Pipe cold bending. Flexure depth with main shaft.
Calculates the section flexure depth with pipe bender or bending machine to obtain given parameters.

- Power to the People
Power units converter.

- Root and power
This calculator outputs desired root and power of entered number

- Second, third and other derivatives
Evaluates first, second third and other derivatives of a single argument function

- Side length of a triangle
This calculator computes side length of a triangle given two sides and angle between them (law of cosines)

- Simple math in any numeral system
This online calculator supports simple math (addition, subtraction, division, multiplication and power) for numbers expressed in any numeral system - binary, octal, hexadecimal, from the base 2 to base 36

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