Online Chemistry Calculators

Unit Conversions A cgi-bin program that converts from one unit to another. You can easily convert units of energy, pressure, volume, temperature, mass, and power.
Ideal Gas Law It's hard to get around chemistry without PV=nRT. But what if you're dealing with psi, ft^3, and °F? The Ideal Gas calculator will handle it. You can even mix SI units with English units and still get the right answer.