From basic additions, business calculations, balancing accounts, to elementary and advance algebra, high school geometry to college trigonometry, calculus etc, calculations in always a big part of our lives. Sometimes we have our calculators for help, but more ofter than not we found ourselves needing calculators when can find one. We always have our phone with us; however, most standard phone calculators are so basic, and difficult to use, that even grade school kids don’t want them. Thanks to android apps developers the android market now have calculators for everyone: scientific calculator, loan calculator, mortgage calculator, algebra and graphing calculators, and even advanced calculator for calculus. So if you have the new Nexus one from Google, droid from Motorola, HTC Hero, Eris and other android phones, here are some general purpose calculators for your daily arithmetic and calculation uses.

Android apps for calculations

Droid48
TI89 is very popular among college and high school students, but, HP 48 is pretty decent too. Here is a HP 48 scientific calculator emulator for you algebra and advance calculus.

Droid48

RealCalc Scientific Calculator
A fully featured scientific calculator which looks and operates exactly like the real thing. You get result history, unit conversions, percentages, 10 memories, hex/binary/octal, haptic feedback, RPN mode and full help.

RealCalc Scientific Calculator

Mathdroid
Works well for algebraic entry.  You get on-screen history multi-line display. Use your phone’s keyboard or on-screen buttons. Use it for usual functions: trig, log, and more.

Mathdroid

Retro Pocket Calculator
Retro Pocket Calculator is your old fashion basic calculator, it should be handy for basic maths and arithmetics.

Retro Pocket Calculator

Phones are more accessible than most electronics by now, so next time you need a calculator bring out android phone, and be confident you are ready. Download the app that will mostly meet your needs. Check back for specific calculator for example mortgage calculator, loan calculator, etc later. Hello android.