Electronics and embedded hardware · Circuit fundamentals
Unloaded voltage divider
Calculate the output of a two-resistor voltage divider with no load connected to its output.
Method and scope
Vout = Vin × Rbottom/(Rtop + Rbottom).
Use unloaded voltage divider for educational calculation or a clearly scoped arithmetic estimate. Intended for Learners, General educational use.
Inputs- Input voltage — V, mV, kV
- Upper resistor — Ω, kΩ
- Lower resistor — Ω, kΩ
SOURCE AND LIMITS
Assumptions: Two ideal resistors are in series across Vin. Output is measured across the lower resistor with no load attached.
Limitations: A connected load changes the effective lower resistance and output voltage.
Method version 1.0.0 · Unit registry and result provenance are shown after calculation. This tool is limited to the documented scope.Explore related fields
See the other currently released formula calculators tagged for these research fields.