Science & engineering
Series & parallel resistors
Calculate ideal resistance in series or parallel.
A clear answer. Here’s how.
Series resistance is the sum. Parallel resistance is the reciprocal of the sum of reciprocals. Enter 1–1,000 component values from 1e-12 through 1e12 in Ω. Ideal components only; tolerances and frequency effects are excluded.
See a worked example
Worked example
A fixed demonstration, separate from the values you enter above.
- Resistance values (Ω), separated by spaces
- 100, 220, 330
- Connection
- Series
Example result
- Equivalent resistance (Ω)
- 650
- Component count
- 3