Science and Engineering
Electrical, chemistry and physics calculators for students and engineers.
Science and engineering problems, whether it's a physics assignment, an electrical wiring calculation, or a chemistry stoichiometry problem, are built on specific formulas that need to be applied precisely, a small error in a voltage drop calculation or a molarity conversion can matter a lot more than a rounding error in everyday arithmetic. This category covers electrical calculators (voltage drop, Ohm's law, resistor color codes, electrical load), physics calculators (projectile motion, free fall, torque, pendulum period, wave speed), and chemistry calculators (molarity, molecular weight, ideal gas law), each using the standard formula from its field rather than a simplified shortcut. These are useful for students checking homework, engineers doing a quick planning calculation before a more detailed design pass, and hobbyists working on an electrical or mechanical project at home. Electrical calculators in particular are explicitly framed as planning guidelines, not a substitute for following local electrical code or consulting a licensed electrician on a real installation.