Resistor Tools

Find the best resistor combinations to achieve your target resistance. Search through your available resistors and get optimized circuit solutions.

Build custom resistor circuits with up to 10 different schemas. Input resistance values and calculate total circuit resistance instantly.

Calculate total resistance for series or parallel resistor circuits. Add multiple resistors with optional tolerance, voltage, and power ratings.

Design voltage divider circuits to step down voltage levels. Input your source voltage and target voltage to find optimal resistor configurations.

Build and analyze voltage divider circuits. Select a schema, set resistor values and source voltage, and calculate the output voltage.

Find resistor combinations from standard E-series (E6–E192) to match a target resistance. Select your preferred E-series and get optimized circuit solutions.