This is a simple online scientific calculator that is easy to bring up when needed. Includes four functions, squares, square roots, cubes, exp, ln, trig, and memory functions. The converter can show the equivalent values for any two units within the same category. You can easily convert units of energy, pressure, volume, temperature, mass, and power. This is an online unit convertor which includes simple metric and other derived units.
Applets deliver on-screen conversions.
From Jan Derk Stegeman. Dave's Molar Mass and Percent by Mass Calculator Enter the formula for a compound and get the molar mass and the elemental percentage composition. This applet has been written at Dr. H. Rzepa lab, Chemistry dept, Imperial College of Science, Medicine and Technology, by Guillaume Cottenceau. The Ideal Gas calculator will handle it. You can even mix SI units with English units and still get the right answer.