Series Resistance Calculator

Summary

Add 2–10 resistor values (Ω, kΩ, or MΩ) and instantly get the total series resistance.

How it works

1. Enter the value of each resistor in the input fields.
2. Select the unit (Ω, kΩ, or MΩ) for each resistor independently.
3. Click "Calculate" or type in any field to update the result instantly.
4. The calculator converts all values to ohms, sums them, and displays the total.
5. Use "Add Resistor" to include more resistors (up to 10) and "Remove" to delete the last one.

Use cases

• Design resistor networks for voltage dividers and current-limiting circuits.
• Verify breadboard or PCB layouts before powering up.
• Calculate total load resistance for power supply design.
• Quickly check series combinations when exact values are not in stock.
• Teach or learn Ohm's Law and Kirchhoff's Voltage Law concepts.
• Cross-check SPICE simulation results for simple series circuits.

Frequently Asked Questions