 RZCalculator This calculator for java mobile phones can calculate binary, octal, decimal, hex numbers and convert it to each other. It supports logical expressions, parenthesisses, memory and 64bit integer arrithmetics. Operator precedence as in C++, C#, C, Java   Resistor Calculator Resistor Calculator  Given the color bands on the resistor, it will tell you the resistance and tolerance rating. It is designed so that you may easily see how resistance is calculated using the color bands and hence calculate resistance on your own   MC calculator Universal free, every day use calculator withscientific features. One of top.
Good for simple and advanced calculations! This calculator has got a LOT of functions   TVH72g Graphing Calculator TVH72g Graphing Calculator  TVH72g Graphing Calculator is a lowcost introductory & disposable graphing calculator for the educational use of schools and students who may have difficulty, are unable or may not wish to acquire a standalone featureladen graphing calculator   Frink Frink  Frink is a programming language and calculating tool designed to help you make realworld calculations.
Frink is different than other calculating tools in that it tracks units of measure through all calculations. Thus, you can add feet and meters, multiply by grams, divide by pounds, and Frink does the right thing through all calculations 

 UPNCalc UPNCalc is a RPN (Reverse Polish Notation) calculator for mobile phones.
· Arbitrary precision unnormalized BCD arithmetic.
· Arithmetic standard functions (approximated to arbitrary precision): sin, cos, tan, arcsin, arccos, arctan, 1/x, sqrt(x), exp(x), ln(x), y^x.
· Angle measure in DEG, RAD or GRAD   Graphing Calculator Graphing Calculator  FREE app, designed to turn your cell phone into a Graphing Calculator.
It should work on all phones that support J2ME, like Nokia, Blackberry, Motorola, LG, Samsung, Sony Ericsson and more (specifically MIDP 2.0 and CLDC 1.1)   Total Calculator Calculate the whole expression in single step. Know how healthy you are with BMI calculator. It's Free   Scientific calculator(touch) The image that i put as preview is not the real software. The real software is moooooore useful!!   MobileMath MobileMath  MobileMath turns your mobile into a calculator supporting many operations such as: evaluate expression, plotting, differentiate & integrate expression...
Supports basic functions of a calculator:
· Operators : +, , *, /, ^
· Functions : sin, cos, tan, exp, ln...
· Solve equations
· And much more.. 
