Color ring resistor calculator

Step 1: Select the resistor type Step 2: Click the color bar to set the color
Reading: 0 Ω Error: ±0%

What is a Color Ring Resistor Calculator?

A Color Ring Resistor Calculator is a tool used to determine the resistance value of a resistor based on its colored bands. Resistors use color-coded bands to represent their resistance, tolerance, and sometimes reliability.

Each color corresponds to a digit or a multiplier based on the resistor color code chart.

Why Use a Color Ring Resistor Calculator?

Instead of manually decoding the color bands, a calculator helps by:

  • Quickly finding resistance values without memorizing the color chart.
  • Reducing errors in reading resistor values.
  • Helping students and engineers work efficiently on circuit designs.

How to Use a Color Ring Resistor Calculator?

  1. Identify the number of bands on the resistor (4, 5, or 6 bands).
  2. Select the colors in order from left to right.
  3. The calculator will display the resistance value and tolerance.

Example:

  • Brown-Black-Red-Gold → 1,000Ω (1kΩ) ±5%
  • Yellow-Violet-Orange → 47,000Ω (47kΩ)

When to Use a Color Ring Resistor Calculator?

  • When working with circuit boards and need to identify resistor values.
  • During electronic repairs to find the right replacement resistor.
  • In education and training to learn resistor color codes.
  • For DIY electronics projects to select correct resistors.