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Calculate voltage divider output voltage, resistor values, current, power dissipation, loading effects, and resistor networks for accurate analog and digital circuit design.
Custom SVG diagrams show ideal divider and loaded divider. Load section appears only when the checkbox is enabled.
This tool calculates ideal voltage divider output and optional loaded output when a real circuit is connected to Vout.
A voltage divider uses two resistors to scale an input voltage down. Without load, output depends only on R1 and R2. With a load connected, the load appears in parallel with R2 and usually reduces output voltage. This matters for ADC inputs, sensor dividers, logic-level scaling, battery sensing and microcontroller input circuits.
A voltage divider is a two-resistor circuit that creates a lower output voltage from a higher input voltage.
Load resistance connects across the output and acts in parallel with R2, changing the divider ratio.
Because R2 parallel Rload is smaller than R2 alone, so the output node is pulled down.
It is R1 parallel R2 and helps estimate ADC settling and RC filtering behavior.
Yes, but check input impedance, sampling capacitor requirements and divider current.
Voltage Divider Calculator is a free online calculator tool. Use it to get instant, accurate results for your electronics calculations.