Engineer Calculator

The essential toolkit for electronics engineers. Hex converters, calculators, I²C tools, and more — all in one app.

Engineer Calculator is a clean, fast reference tool built for electronics engineers and embedded developers. Whether you're on the bench or in a meeting, get instant answers without hunting through datasheets or opening a laptop. TOOLS INCLUDED • HEX/BIN/DEC Converter — Convert between hexadecimal, binary, and decimal in real time • Calculator — Standard arithmetic for quick on-the-fly calculations • I²C Address Converter — Convert 7-bit to 8-bit addresses with read/write breakdown • Capacitor Unit Converter — Instantly convert between pF, nF, µF, mF, and F • Voltage Divider — Calculate output voltage, current, and power dissipation • LDO Vout Calculator — Solve for Vout, R1, or R2 with circuit diagram reference • Resistance Calculator — Total resistance for series and parallel configurations • Switching Power Design — Interactive DC-DC converter design tool DESIGNED FOR ENGINEERS No clutter, no ads, no unnecessary features. Every tool includes formula references and circuit diagrams so you always know what you're calculating and why. Works great on all screen sizes. Supports light and dark mode automatically.