- 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

- Meters per second and kilometers per hour
This simple calculator convert meters per second to kilometers per hour and vice versa

- Mortgage calculator
- Nominal interest rates сomparison
Сalculation of the effective interest rates for a given nominals

Nautical mile, sea mile, cable

- Number of agents in call center
The calculator works out number of call center agents using Erlang C formula for given call load and service level.

- Number of days in a year
- Number of flagstones for paving
This calculator will help you to estimates number of flagstones needed for paving

- 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

- Parallel and perpendicular lines on a plane
This online calculator checks lines' slopes to see if they are parallel or perpendicular

Calculator which converts units of pressure

- PBX channel number calculation
Calculates number of PBX telecommunications channels for given traffic load using Erlang B and Engset algorithms

- 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.

- Price based on running meter
This online calculator calculates the price of certain area based on price of running or linear meter

- Prospect distance from the ground and line of sight distance between two observers
Calculates the prospect distance from height at observer and line of sight distance between two observers.

- Regular expression tester
This online calculator allows user to experiment with regular expressions.

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