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Voltage Divider Calculator

Output voltage of a resistor divider, or the resistor for a target voltage

Divider

V
V
Ω
Ω
Ω

The input resistance of whatever the output feeds. Type values like 4.7k, 4k7, 100n or 2M2.

Display

Output Voltage

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Ratio

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Divider Current

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Output Resistance

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Power in R1

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Power in R2

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Diagram

All measurements

MeasureValueHow it is worked out