OneSDR contains affiliate links and is a member of the Amazon Services LLC Associates Program, eBay affiliate program, Etsy Affiliate Program. If you make a purchase using one of these links, we may receive compensation at no extra cost to you. This helps support our research, testing and writing.

Series Resistance Calculator (any number of resistors)

This calculator determines the total effective resistance of any number of resistors in a series configuration.

Series Resistance Calculator

Enter the resistor values separated by commas.

Series Resistance Formula

Rtotal = R1 + R2 + R3 +…. + Rn

Example Calculation

Consider four resistors in series: 1 Ω, 6 Ω, 15 Ω and 100 Ω. The total effective resistance is 122 Ω.

If you have two resistors – one large and the other small in series, the effective resistance is closer to the larger value. Take for instance,

1 Ω and 1000 Ω in series. The effective resistance is 1001 ≈ 1000 Ω.

In the event that the same two resistors are in parallel, the effective resistance is closer to the smaller value.

1 Ω in parallel with 1000 Ω is 0.999 Ω ≈ 1 Ω.

Application

Used to calculate the total impedance of audio speakers connected in series.

Related Calculator

The Art of Electronics

⭐⭐⭐⭐⭐ The best single authoritative book on Electronic Circuit Design