Electronic circuits calculator

Electronic Circuits Calculator Pro is a comprehensive electronics toolkit featuring 120+ calculators and reference guides. It supports light and dark modes and 14 languages, enabling study in your native language and convenient on-the-go access for engineers, students, hobbyists, and educators.

Available as a Chrome extension, it runs offline in your browser for quick reference. The tool covers essential topics—from Ohm's Law and resistors to transistors, op-amps, power supplies, LEDs, filters, and timers—providing a robust set of calculators and guides to learn, verify designs, and perform fast calculations anywhere.