Resistor ToolKit, Color Codes

This is the brand new Resistor ToolKit!

Try the MOST CONVENIENT Ohms Law calculator EVER!

Find the EQUIVALENT CIRCUIT (series or parallel) for a specific Resistor value.

Experience the MOST SIMPLE Resistor Color Code Tools for through-hole components and a Code Tool for SMD components.

Get a statistic of the CLOSEST lower and higher Resistor of different E Series.

UNLOCK even more features!
- 5-band resistor tool
- SMD code resistor tool
- Example functionality
- Info screens with more material and explanations
- and of course: all Ads removed!