Electrical Relationships Calculator
Enter one supported positive pair to solve Ohm’s law and electrical power relationships. This informational calculator does not provide wire, breaker, voltage-drop, ampacity, or electrical-code recommendations. Calculate it clearly with Figur.
Electrical Relationships Calculator
Enter one supported positive pair to solve Ohm’s law and electrical power relationships. This informational calculator does not provide wire, breaker, voltage-drop, ampacity, or electrical-code recommendations.
Method and assumptions
Figur applies V = I × R and P = V × I to one of six supported positive input pairs to derive voltage, current, resistance, and power.
- Values describe an ideal direct-current relationship or equivalent resistive load.
- Both known values are positive, finite, and expressed in V, A, Ω, or W as identified by the selected pair.
- The tool evaluates mathematical relationships and does not assess conductors, protection, voltage drop, ampacity, or code.
Mathematical reference only; not electrical design, installation, or safety advice.
Sources and references
Frequently asked questions
Which pairs can I enter?
Use V+I, V+R, I+R, P+V, P+I, or P+R; the calculator derives all four values.
Is this electrical design advice?
No. It only evaluates ideal mathematical relationships and never sizes conductors, breakers, or installations.