Resistor Colour Code Calculator : Series & Parallel

By using our Resistor Colour Code Calculator, you can quickly decode the color bands and obtain the resistance value of a resistor. Additionally, it provides the tolerance range, which signifies the allowable deviation from the specified resistance value. Also calculate resistance in series and parallel in an circuit.

Whether you’re an electronics enthusiast, a student, or a professional engineer, this resistor calculator can save you time and effort in determining the resistance and tolerance values of resistors. This will also help to find resistors in series and parallel. It simplifies the process and helps ensure accurate calculations in your electronic projects or troubleshooting tasks.

Resistor Colour Code Calculator

Effective Resistance Calculator:

Resistor Colour Code

The resistor colour code is a system of representing the value and tolerance of resistors through the use of coloured bands on their bodies. The colour code typically consists of three to six colored bands, each representing a specific value or multiplier.

Also Try:- SMD Resistor Calaculator

How Resistor Band Works

3-Band Resistor Colour Code:

• The first band represents the first significant digit of the resistance value.
• The second band represents the second significant digit of the resistance value.
• The third band represents the multiplier, which indicates the number of zeros to add after the significant digits.
• By default has 20% Tolerance

4-Band Resistor Colour Code:

• The first band represents the first significant digit of the resistance value.
• The second band represents the second significant digit of the resistance value.
• The third band represents the multiplier, indicating the number of zeros to add after the significant digits.
• The fourth band represents the tolerance level, indicating the allowable deviation from the specified resistance value.

5-Band Resistor Colour Code:

• The first band represents the first significant digit of the resistance value.
• The second band represents the second significant digit of the resistance value.
• The third band represents the third significant digit of the resistance value.
• The fourth band represents the multiplier, indicating the number of zeros to add after the significant digits.
• The fifth band represents the tolerance level, indicating the allowable deviation from the specified resistance value.

6-Band Resistor Colour Code:

• First to Third Bands: Represent the first three significant digits of the resistance value.
• Fourth Band: Represents the multiplier (the number of zeros to add).
• Fifth Band: Represents the tolerance level (the allowable deviation).
• Sixth Band: Represents the temperature coefficient (rate of resistance change with temperature).

Multiplier:

The multiplier band in a resistor colour code indicates the number of zeros to add after the significant digits to determine the resistance value. It essentially acts as a multiplier for the significant digits.

For example, if the multiplier band is red, it means you need to multiply the significant digits by 10^2 (which is 100). Similarly, if the multiplier band is green, you multiply the significant digits by 10^5 (which is 100,000).

Tolerance:

The tolerance band in a resistor colour code indicates the allowable deviation from the specified resistance value. It represents the range within which the actual resistance of the resistor may vary.

For example, if the tolerance band is gold, it means that the actual resistance of the resistor can deviate by +/- 5% from the specified value. Similarly, if the tolerance band is red, the allowable deviation is +/- 2%.

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