Enter two resistor values to calculate equivalent resistance and total conductance.
Results are for information and preliminary estimation. For critical technical work, manufacturer data, local codes and qualified professional review take precedence.
For two resistors, 1/Req = 1/R1 + 1/R2. Equivalent resistance is always lower than the smallest branch resistance.
Example: 100 Ω in parallel with 220 Ω gives about 68.75 Ω.
Electrical and energy calculations are not final designs by themselves. Load profile, conductor conditions, protection, efficiency and local codes must be considered together. Sorsana tools are intended for preliminary sizing and scenario comparison.
Parallel branches add conductance, so total resistance drops.
Sum 1/R for every branch and take the reciprocal.
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