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Scientific Calculator

Ostermiller Basic and Scientific Calculator

Scientific Expression or Formula Calculations. Twenty Transaction Memory and Tape, Different bases like Decimal and Octal, Logic Math, Functions, Constants.

Ostermiller Calculator xml code

Deriving knowledge and inspiration from The GUI and Skin Modifications were done by me.

It has Brackets to build your own math equation. Scientific Functions like Trigonometric, Hyperbolic, Logarithmic.Memory (cookies), A Paper Trail or Tape for Equation and Result History.

Help Documentation


ans The last calculated result
PI pi = 3.14159265...
E e = 2.71828182...
LOG2E log of e base 2
LOG10E log of e base 10
LN2 log of 2 base e
LN10 log of 10 base e
SQRT2 square root of 2
SQRT1_2 square root of 1/2


abs(a) the absolute value of a
acos(a) arc cosine of a
asin(a) arc sine of a
atan(a) arc tangent of a
atan2(a,b) arc tangent of a/b
ceil(a) integer closest to a and not less than a
cos(a) cosine of a
exp(a) exponent of a
floor(a) integer closest to and not greater than a
log(a) log of a base e
max(a,b) the maximum of a and b
min(a,b) the minimum of a and b
pow(a,b) a to the power b
random() pseudorandom number in the range 0 to 1
round(a) integer closest to a
sin(a) sine of a
sqrt(a) square root of a
tan(a) tangent of a

From - Scientific Calculator by Stephen Ostermiller at

Screenshot of Ostermiller Basic and Scientific Calculator

Ostermiller Basic and Scientific Calculator

Related Resource -

In case you are looking for a Desktop Equivalent of this try - ESBCalc Scientific Calculator. Here is an Advanced one for full Engineering and Scientific Power - SpeedCrunch - Fast, High precision and powerful desktop calculator.