Calculate output voltage of a two-resistor divider, with a live diagram. This free tool by electronmagazine.com runs entirely in your browser — no sign-up, no uploads, no tracking of your input.
How to use
- Enter input voltage.
- Enter R1 (top) and R2 (bottom) in ohms.
- Read Vout and current; the diagram updates live.
FAQ
What is the divider formula?
Vout = Vin × R2 / (R1 + R2).
Does load affect output?
Yes, a load in parallel with R2 lowers Vout.
Can I power devices from a divider?
Generally no; use a regulator for loads.
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