How does the Voltage Divider Calculator work?

Two resistors in series across supply voltage Then: Output taken between resistors Then: Formula: Vout = Vin × (R2 ÷ (R1 + R2)) Then: Select resistors to achieve desired output voltage.

Can you give an example of how to use the Voltage Divider Calculator?

Example: Input V1=12V, R1=1k, R2=1k gives a result of Vout=6V.

Is the Voltage Divider Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Voltage Divider Calculator?

Our Voltage Divider Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

Specialiseret

Voltage Divider Calculator

Input Voltage (V)

Resistor 1 (Ω)

Resistor 2 (Ω)

Calculates output voltage from a resistor network dividing input voltage. Used for ADC inputs, sensor interfaces, and voltage scaling.

Symbol	Name	Unit	Description
R2	R2 value	—	Variable used in the calculation
R1	R1 value	—	Variable used in the calculation

Difficulty:intermediate

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Did You Know?

Voltage dividers are the simplest analog-to-digital conversion method but lack precision.

References

›Voltage Divider Calculator

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Voltage Divider Calculator

Voltage Divider Calculator

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