All online calculators

  • 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.

  • LL1 grammar analysis. Yet another top-down parser generator.

    The calculator checks LL1 grammar correctness, parses a text using the grammar, shows FIRST, FOLLOW and FIRST PLUS sets, parsing tree and gives PLANETCALC parsing code.

  • Log-normal distribution

    It calculates the probability density function (PDF) and cumulative distribution function (CDF) of long-normal distribution by a given mean and variance.

  • Logarithm

    This online calculator produces the logarithm of a given number with a given base. It computes also the natural logarithm and the common logarithm (decimal logarithm).

  • Luhn algorithm

    Calculates digit sequence checksum using Luhn algorithm (mod 10), calculates validation digit (the digit to be appended to the digit sequence to make whole sequence ckecksum equal to zero).

Loan payment example


Credit cost

Credit amount

Period in years

Annual interest rate (percent)

Digits after the decimal point: 2

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


Mathematical calculator

You may use arithmetic operations: (+-*/), real or integer numbers, pi constant and number of functions: sin, cos, tan , cotan , sec cosec, sech , tanh , cotanh , csch, arcsin , arccosec , arccos , arctg , arcctg , arcsec, exp , lb , lg , ln , versin, vercos , haversin , exsec , excsc , sqrt, sh , ch.

Digits after the decimal point: 10