Voltage divider output voltage calculator (from R1 & R2)

[to-calculator-info][/to-calculator-info]

[calculator]

Input voltage: [calculator-input name=“vin” label=“input voltage” unit=“V”][/calculator-input]

Top resistor: [calculator-input name=“r1” label=“resistance (top resistor)” unit=“Ω”][/calculator-input]

Bottom resistor: [calculator-input name=“r2” label=“resistance (bottom resistor)” unit=“Ω”][/calculator-input]

[calculator-expression name=“vout” formula=“vin*r2/(r1+r2)” unit=“V”]

[calculator-output name=“output voltage” unit=“V”] A voltage divider with R1=<%= format(r1, “Ω”) %> and R2=<%= format(r2, “Ω”) %> with an input voltage of <%= format(vin, “V”) %> has an output voltage of <%= format(vout, “V”) %> [/calculator-output]

[/calculator]

$$V_{out} = V_{in} \cdot \frac{R_2}{R_1\cdot R_2}$$