# Resistor Color Code Calculators – 3, 4, 5 & 6 Band Resistors Calculation

**3, 4, 5 and 6 Band Resistor Color Code Calculators**

Resistor color codes are used to indicate the value of resistance defined by Radio Manufacturer association in 1920 according to the International Standards IEC 60062.

Below are given calculators for different types of resistors such as 3 Band, 4 Band, 5 Band and 6 Band resistors. Explanation, formulas and charts are added below each resistor color code calculator.

**Note: If you are on mobile phones, click on the “…” dotes beside the 3-band resistor to select other bands i.e. 4-band, 5-band and 6-band resistor calculator. For better experience through mobile phones, use the calculator in landscape position.**

**3 Strip Resistor Color Code Calculator**

**Three Band Resistor Color Code Calculator**

It is rarely used nowadays. To read the three strip colors strips on a resistor, the first strip shows the first significant figure. The second strip shows the second significant figure and the third strip shows the multiplier. The tolerance for three bands resistor is generally ±20% (i.e. No tolerance strip = ±20% Tolerance).

**How to calculate Three Band Resistor Color Code**

**Formula for 3 Band Resistor Calculator**

**1st Digit . 2nd Digit x Multiplier**

For example, the value of resistance for shown three band resistor color code (**Brown**, **Black **and **Red**) according to the table would be:

**1 . 0 x (100) = 1000Ω with ± 20% Tolerance.**

**4 Strip Resistor**

**Four Band Resistor Color Code Calculator**

These are common type of resistors to use in electronic circuits. To read the four strip colors codes on a resistor, the first strip shows the first significant figure. The second strip shows the second significant figure. The third strip shows the multiplier. The forth strip shows the ± tolerance in % for four bands.

**How to calculate Four Band Resistor Color Code**

**Formula for 4 Band Resistor Calculator**

1^{st} Digit . 2^{nd} Digit x Multiplier; ± Tolerance in %

For example, the value of resistance for shown 4 band resistor color code (**Brown**, **Black**, **Red** and **Golden**) according to the table would be:

**1 . 0 x (100) = 1000Ω with ± 5% Tolerance.**

**5 Strip Resistor**

**Five Band Resistor Color Code Calculator**

There is an additional color strip as third significant figure in 5 band resistor color code for high accuracy. To read the five strip colors codes on a resistor, the first, second and third strip color codes shows the first significant, second significant and fourth significant figures accordingly. The fourth strip shows the multiplier. The fifth strip shows the ± tolerance in % for five bands.

**How to calculate Five Band Resistor Color Code**

**Formula for 5 Band Resistor Calculator**

**1 ^{st} Digit . 2^{nd} Digit . 3^{rd} Digit x Multiplier; ± Tolerance in %**

For example, the value of resistance for shown 5 band resistor color code (**Brown**, **Black**, **Orange**, **Red** and **Yellow**) according to the table would be:

**1 . 0 . 3 x (100) = 10.3 kΩ with ± 5% Tolerance.**

**Good to know:**

There is a special scenario in case of 5 band resistor color code resistor where the forth strip is **Gold** or **Silver**. In this case, the first two bands shows the fist two significant digits, third one is for multiplier, 4th one is for tolerance and 5th one is for temperature coefficient same is in six band resistor color code resistor. The unit of temperature coefficient is in ppm/K and more details about ppm/K can be found in 6-Band Resistor Color Code.

**6 Strip Resistor**

**Six Band Resistor Color Code Calculator**

There is an additional color strip as temperature coefficient in 6 band resistor color code for high accuracy and precision. To read the six strip colors codes on a resistor, the first, second and third strip color codes shows the first significant, second significant and third significant figures respectively. The fourth strip shows the multiplier. The fifth strip shows the ± tolerance in %. The six band shows the temperature coefficient

**How to calculate Five Band Resistor Color Code**

**Formula for 5 Band Resistor Calculator**

**1**^{st}** Digit . 2**^{nd}** Digit . 3**^{rd}** Digit x Multiplier; ± Tolerance in % , Temp ****Coefficient**

For example, the value of resistance for shown 5 band resistor color code (**Brown**, **Black**, **Orange**, **Red**, **Yellow**, **Brown**) according to the table would be:

**1 . 0 . 3 x (100) = 10.3 kΩ with ± 5% Tolerance 100 ppm/°C.**

**Good to know**

The sixth Band used for temperature coefficient in 6 Band Resistor Color Code. The **PPM/K means “Part Per Million in ****Kelvin**“.

For above mentioned color code for temperature coefficient which is **brown**, It means, the resistance will change by 100 part per million per 1 Kelvin.

For example,

The above resistor having value of 10.3 kΩ with ± 5% Tolerance and 100 ppm/°C (**Brown **Color as 6th Band for temperature coefficient. And we want to know how much the value of resistance would be changed if change occurs in temperature of 10ºC.

**(100 x 10ºC/10 ^{6}) x 10.3kΩ = ± 1.03Ω variation over 10ºC.**

**Resistor Color Codes**

This handy tool is designed to calculate the value of 3 Band, 4 Band, 5 Band and 6 Band resistor according to their color codes.

meanwhile, to know how the resistor color code calculator works and how to read the printed color codes on a specific resistor to find their value, see the following tables and chart. Also, formulas and tables are also given below each calculator with a solved example.

Below is a given table shows the different values for different color codes of resistors.

# of Bands | 3-Band | 4-Band | 5-Band | 6-Band |

1^{st }Band | 1^{st} Digit | 1^{st} Digit | 1^{st} Digit | 1^{st} Digit |

2^{nd} Band | 2^{nd} Digit | 2^{nd} Digit | 2^{nd} Digit | 2^{nd} Digit |

3^{rd} Band | Multiplier | Multiplier | 3^{rd }Digit | 3^{rd} Significant Digit |

4t^{h} Band | N/A | Tolerance | Multiplier | Multiplier |

5^{th} Band | N/A | N/A | Tolerance | Tolerance |

6^{th} Band | N/A | N/A | N/A | Temperature Coefficient |

### Color Values for Significant Digits

In resistor color codes, each color shows a specific value. In case of 3 band and 4 band resistors, the first two color bands are showing the significant figures and their values while in 5 band and 6 band resistors, the 1^{st}, 2^{nd} and 3^{rd} color bands are showing the significant figures and related values.

Band Color | Value |

Black (2^{nd }& 3^{rd} Bands Only) | 0 |

Brown | 1 |

Red | 2 |

Orange | 3 |

Yellow | 4 |

Green | 5 |

Blue | 6 |

Violet | 7 |

Grey | 8 |

White | 9 |

The following simple mnemonics can be memorize to remember the color code sequence for resistor color codes.

**B**etter**B**e**R**ight**O**r**Y**our**Gre**at**B**ig**V**acation**g**oes**W**rong.**B****B****ROY**of**G**reat**B**ritain had a**V**ery**G**ood**W**ife who wore**G**old and**S**ilver**N**ecklace.

The second one is for additional colors in multiplier.

### Color Values for Multiplier

The color on the third band for 3 band resistor and 4 band resistor or the fourth band for 5 band and 6 band resistor is known to be **Multiplier**. The following table shows the color and related values for multiplier.

COLOR | MULTIPLIER |

BLACK | 1Ω |

BROWN | 10Ω |

RED | 100Ω |

ORANGE | 1kΩ |

YELLOW | 10kΩ |

GREEN | 100kΩ |

BLUE | 1MΩ |

VIOLET | 10MΩ |

GREY | 100MΩ |

WHITE | 1GΩ |

GOLD | 0.1Ω |

SILVER | 0.01Ω |

### Tolerance Color Values

In three band resistor color codes, there is no tolerance band, so generally, 20% are assumed. The forth band in 4 band resistor color is used for tolerance value. In case of 5 band and 6 band resistors, the 5^{th} band code is used for tolerance.

COLOR | Tolerance |

BLACK | N/A |

BROWN | ± 1% (F) |

RED | ± 2% (G) |

ORANGE | ± 3% |

YELLOW | ± 4% |

GREEN | ± 0.5% (D) |

BLUE | ± 0.25% (C) |

VIOLET | ± 0.10% (B) |

GREY | ± 0.05% (A) |

WHITE | N/A |

GOLD | ± 5% (J) |

SILVER | ± 10% (K) |

**Tolerance Letter Codes for Resistors**

- A = 0.05%
- B = 0.1%
- C = 0.25 %
- D = 0.5 %
- F = 1 %
- G = 2 %
- J = 5 %
- K = 10 %
- M = 20 % (General)

**Temperature Coefficient Values**

The 6th Band of a six band resistors shows the Temperature Coefficient in ppm/ºC which indicate how much the value of resistor is change when change occurs in temperature. More details about Temperature Coefficient and ppm/ºC and ppm/K can be found below the resistor calculator for 6 band. In shorts, The **PPM/K means “Part Per Million in ****Kelvin**“.

For instance,

The above 6 band resistor having value of 10.3 kΩ with ± 5% Tolerance and 100 ppm/°C (**Brown **Color as 6th Band for temperature coefficient. And we want to know how much the value of resistance would be changed if change occurs in temperature of 10ºC.

**(100 x 10ºC/10 ^{6}) x 10.3kΩ = ± 1.03Ω variation over 10ºC.**

COLOR | Temperature Coefficient (ppm/ºC) |

BLACK | N/A |

BROWN | 100 |

RED | 50 |

ORANGE | 15 |

YELLOW | 25 |

GREEN | N/A |

BLUE | 10 |

VIOLET | 5 |

GREY | N/A |

WHITE | N/A |

**Good to Know:**

- In case of 5 band color code resistor where the forth strip is
**Gold**or**Silver**. In this case, the first two bands shows the fist two significant digits, third one is for multiplier, 4th one is for tolerance and 5th one is for temperature coefficient same is in six band resistor color code resistor. The unit of temperature coefficient is in ppm/K and more details about ppm/K can be found in 6-Band Resistor Color Code. - The
**Gold**and**Silver**band colors are replaced with**Yellow**and**Grey**Colors in case of high voltage resistor to prevent particles such as metals etc to get in the resistor coating. - Zero Ohm resistor (Single Black Color Band) is used as a wire link in PCB (Printed Circuit Board) to connect traces.
- For high sensitive device (such military purposes), there is a Reliability Band which shows failure rate in % per 1000 hours of service. This band is not available in commercial resistors.

**SMD Resistor Color Codes**

We have already discussed a very detailed post about How to Find the value of SMD Resistors with solved examples.

**Resistor Color Code **Charts

Resistor Color Code Chart

Calculating the value of resistance of 3 Band, 4 Band, 5 Band and 6 Band Resistor Color Code.

3, 4, 5 and 6 band resistor color code chart.

Significant Figures Color Values for resistor color codes.

Multiplier Color Values for resistor color codes.

Tolerance Color Values for resistor color codes.

Temperature Coefficient Color Values for resistor color codes.

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well done