Resistor Circuit Finder

Find the Right Circuit from Your Resistors

Tell us which resistors you have and what resistance you need. We'll find the best way to connect them.

A Simple Solution to a Complex Problem

Resistors can connect in series or parallel, creating thousands of possible combinations. Finding the right one by hand takes forever, especially when you need to consider power, voltage, and tolerances.

Built by engineers for engineers, we've created a tool that does the hard work for you, finding the best resistor combinations in seconds.

Just add your resistors, set your target resistance, and let our system find the optimal circuit.

Who Is This For?

Whether you're a professional or just getting started, this tool will save you time

Electrical Engineers

Design circuits faster with automated resistor combinations

Students & Hobbyists

Learn and experiment with resistor circuits easily

Electronics Specialists

Find optimal solutions for professional projects

How It Works

Finding the best combination from thousands of possibilities takes serious computing power. We handle it for you.

Fast & Smart Search

We use multiple proven methods to find the best resistor combinations quickly and accurately.

Constantly Improving

Our system keeps getting better and faster to give you results in seconds.

Reliable Results

Get accurate solutions that work. The free plan already covers most common needs.

Choose Your Plan

Start for free or unlock more features with PRO

FREE

Great for getting started

No registration needed
Choose from standard resistor values
2-4 resistors per circuit
Store up to 10 resistors
Get top 3 solutions
High accuracy results

Start Free

Currently Free

PRO

For advanced users who need more

Register and get 14-day access
Use any resistor values you want
2-6 resistors per circuit
Store up to 25 resistors
Get top 10 solutions
Save your data on our servers

Get PRO Access

Why Use Resistor Circuits?

Combining resistors gives you flexibility and safety

Get Any Resistance You Need

Don't have the exact resistor? Combine the ones you have to get the resistance you need.

Handle More Power

Spread the load across multiple resistors to handle higher voltage and power safely.

Ready to Find Your Circuit?

Start using our resistor calculator now. No registration needed.

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