LM317 Resistor / Voltage calculator
Use our LM317 calculator to compute the output voltage for the given resistors to provide a stable output voltage OR you can calculate the required value of the resistor(R2) for the desired output voltage.
Please enter your values below.
Formulas
![Voltage](https://uk.farnell.com/wcsstore/ExtendedSitesCatalogAssetStore/cms/asset/images/common/calculators/LM317-Vout-1-formula.jpg)
Diagram View
![](https://uk.farnell.com/wcsstore/ExtendedSitesCatalogAssetStore/cms/asset/images/common/calculators/LM317-Circuit-Diagram.webp)