Series and parallel resistors
Equivalent resistance of ideal resistors.
Inputs
Calculations run in your browser. Your input values are not submitted or saved.
Results
- Series
- 600 Ω
- Parallel
- 54.5454545 Ω
Enter up to 50 positive resistances. The result does not determine network tolerance or power handling.
Formula & guidance
Rs=ΣR; Rp=1/Σ(1/R)
Enter up to 50 positive resistances. The result does not determine network tolerance or power handling.
Change the example inputs and check each field’s units. Use equipment datasheets and applicable project standards for final decisions. Results do not establish Canadian electrical-code compliance or certify a design.