*Rt is the Total (Effective) Parallel Resistance.

Parallel Resistor Calculator

Parallel Resistor Calculator

Usage Instructions for Parallel Resistor Calculator:

How to Use the Parallel Resistor Calculator:

  1. Enter Resistor Values:
    • Input the resistance values for Resistor 1, Resistor 2, and Resistor 3 in the provided fields.
    • The resistance values should be entered in Ohms (Ω), Kiloohms (kΩ), or Megaohms (MΩ). You can choose the appropriate unit for each resistor from the drop-down menu next to the input field.
  2. Choose the Unit for Each Resistor:
    • Select the unit of measurement for each resistor from the drop-down options:
      • Ω for Ohms
      • for Kiloohms (1 kΩ = 1000 Ω)
      • for Megaohms (1 MΩ = 1,000,000 Ω)
  3. Click the Calculate Button:
    • Once you’ve entered the values and selected the units, click the “Calculate” button.
    • The calculator will compute the equivalent resistance for the resistors in parallel and display the result below the button.
  4. Result:
    • The equivalent resistance will be shown in Ohms (Ω). The result will be calculated based on the values you entered for the three resistors.
    • If any resistor value is missing or invalid, the calculator will prompt you to enter valid positive values.

Example:

  • If you enter 1000 Ω, 2 kΩ, and 3 MΩ for Resistor 1, Resistor 2, and Resistor 3 respectively, and click “Calculate”, the calculator will display the equivalent resistance of these three resistors when connected in parallel.

Notes:

  • The resistors are assumed to be in parallel. If you need to calculate resistors in series, you will need a different calculator.
  • Ensure all fields are filled out before clicking “Calculate” for accurate results.