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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

First DigitSecond DigitMultiplier
Resistance:

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.

3 Band Resistor Color Code Calculator

4 Strip Resistor 

First DigitSecond DigitMultiplierTolerance
Resistance:
Tolerance:

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

1st Digit . 2nd 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.

4 Band Resistor Color Code Calculator

5 Strip Resistor 

First DigitSecond DigitThird DigitMultiplierTolerance
Resistance:
Tolerance:

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

1st Digit . 2nd Digit . 3rd 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.

5 Band Resistor Color Code Calculator

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 

First DigitSecond DigitThird DigitMultiplierToleranceTemp. Coeff
Resistance:
Tolerance:
Temp. Co.

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

1st Digit . 2nd Digit . 3rd 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.

6 Band Resistor Color Code Calculator

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/106) 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 Bands3-Band4-Band5-Band6-Band
1st Band1st Digit1st Digit1st  Digit1st  Digit
2nd Band2nd Digit2nd Digit2nd Digit2nd  Digit
3rd BandMultiplierMultiplier3rd Digit3rd Significant Digit
4th BandN/AToleranceMultiplierMultiplier
5th BandN/AN/AToleranceTolerance
6th BandN/AN/AN/ATemperature 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 1st, 2nd and 3rd color bands are showing the significant figures and related values.

Band ColorValue
Black (2nd & 3rd Bands Only)0
Brown1
Red2
Orange3
Yellow4
Green5
Blue6
Violet7
Grey8
White9

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

  • Better BRight OYour Great Big Vacation goes Wrong.
  • B B ROY of Great Britain had a Very Good Wife who wore Gold and Silver Necklace.

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.

COLORMULTIPLIER
BLACK
BROWN10Ω
RED100Ω
ORANGE1kΩ
YELLOW10kΩ
GREEN100kΩ
BLUE1MΩ
VIOLET10MΩ
GREY100MΩ
WHITE1GΩ
GOLD0.1Ω
SILVER0.01Ω

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 5th band code is used for tolerance.

COLORTolerance
BLACKN/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)
WHITEN/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/106) x 10.3kΩ = ± 1.03Ω variation over 10ºC.

COLORTemperature Coefficient (ppm/ºC)
BLACKN/A
BROWN100
RED50
ORANGE15
YELLOW25
GREENN/A
BLUE10
VIOLET5
GREYN/A
WHITEN/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

3, 4, 5, and 6 band Resistor Color Code Calculator Chart
Calculating  the value of resistance of 3 Band,  4 Band,  5 Band  and  6 Band  Resistor  Color  Code.Resistor Color Code Calculator - 3, 4, 5 & 6 Band Resistors Calculation
3, 4, 5 and 6 band resistor color code chart.

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

Significant Figures Color Values for resistor color codes.

Significant Figures Color Values for resistor color codes

Multiplier Color Values for resistor color codes.Multiplier Color Values for resistor color codes

Tolerance Color Values for resistor color codes.Tolerance Color Values for resistor color codes

Temperature Coefficient Color Values for resistor color codes.

Temperature Coefficient Color Values for resistor color codes

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2 Comments

  1. kuldeep Puri Goswami says:

    All electronics & Instrumant circuit

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