Loaded Voltage Divider Calculator

How to use Loaded Voltage Divider Calculator

A load parallels the lower resistor. The resulting lower-leg resistance and upper resistor divide the supplied signed DC voltage. Unloaded mode is a separate state rather than a numeric infinity.

1. Enter source voltage (v), upper resistor (ohms), lower resistor (ohms), load resistor (ohms).
2. Choose the stated convention and check the units and supported model.
3. Calculate, inspect the result, then copy or download it.

Good to know

• Positive resistor values, signed finite source voltage, ideal DC model. No regulator, instrument input, real-device tolerance or safety guarantee.
• Runs locally. Text/JSON fields are capped at30,000 characters; stricter page-specific and numeric-string limits also apply. Numeric inputs are bounded to magnitude1e15 and nonzero magnitude at least1e-100 unless an exact-string mode states otherwise. Approximate summaries use12 significant digits; CSV numeric cells retain the complete stored value and potentially formula-like string cells gain a protective apostrophe; unsupported, non-finite or detected underflow states return an error.