A nice and simple graphing calculator.

A simple and handy scientific calculator.

You can use these calculators to calculate daylight, solar eclipse, sun data, orbits, and more..

You can use these calculators to calculate electrode potential, gravitational force, pH, chemistry units conversion, and more..

You can use these calculators to calculate graphs and statistical table entries.

You can use these calculators to calculate equations, area, angle, arch, Bernoulli and Euler numbers, Fibonacci numbers, binomial, expression, and more..

You can use these calculators to calculate snow days, load, drift, probability, and more..

You can use these calculators to calculate acceleration, velocity, and volume, and convert between various units.

You can use these calculators to calculate constructive reals, newtons method, complex numbers, logarithms, and more..

A fully unit-aware, scientific and engineering RPN (reverse polish notation) calculator. Great for anything from basic math in the supermarket to evaluating the ground state energy of a simple harmonic oscillator on your Quantum Mechanics final (if they let you in with an iPhone, of course). TouchRPN knows most basic physical constants and units, as well as household, cooking, and "imperial" units. A built-in tutorial will show you how to use RPN if you're stuck, as well as how to access the advanced features.

Converter Plus is a unit converter with very extensive list of currencies and units in hundreds of categories. The list includes area, weight, energy, force, length, mass, power, pressure, speed, temperature, volume, bits and bytes and many more

A nice little scientific calculator.

Converter Plus is a unit converter with very extensive list of currencies and units in hundreds of categories. The list includes area, weight, energy, force, length, mass, power, pressure, speed, temperature, volume, bits and bytes and many more

PCalc Lite is a fully functional and free taste of our popular scientific calculator. It includes an optional RPN mode, multiple undo and redo, unit conversions and constants, as well as two stylish themes and our highly praised design.