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Resistor Solver

Resistor Solver is a web app that finds EIA resistor values for user defined formulas or 
The ability to write the equation that needs to be solve sets this tool apart from others for its flexibility.
The tool can find the solution for more than one or more equations.
For example, if to calculate the values fora resistor divider from 5V so that the output is 3.39V. Then entering the formula 5*R1/(R1+R2)=3.39 will calculate all R1 ad R2 pairs that respect the condition.
Also inequalities can be defined, such as for example R1//R2<10k so that the output impedance is lower than 10kOhms.

It can help you find the Resistor Values of a given series or from a List. On the image on the left an example of usage can be found.
If you like it, then please consider a donation. This will help me support the recurring costs of hosting this site and fund other developments.