4-Band Resistor Color Code Calculator: red, yellow, grey, gold

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4-Band Resistor Color Code Calculator: Decode resistor red, yellow, grey, gold.

Resistor Color Code Calculator



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Q&A

How to use the Resistor Color Code Calculator?

The Resistor Color Code Calculator is capable of reading 4-band, 5-band, and 6-band resistors. First, choose the correct number of bands then setup the band colours by clicking on the virtual resistor bands. The Resistor Color Code Calculator immediately shows the resistor values.

If you one to know more about resistor color codes, resistor e-series standards, etc, you can find detailed information below. You also can download our Resistor Color Code Reading Guide.

How to read a 4-band resistor color code?

Start reading the 4-band resistor from left to right, the first two color bands represent significant digits, the third band represents the decimal multiplier, and the fourth band represents the tolerance. The exact meaning of each color code for the 4-band resistors is given in the chart below.

4-band resistor color code chart

COLOR CODEBAND 1BAND 2BAND 3BAND 4
COLORDIGIT 1DIGIT 2MULTIPLYTOLERANCE
Black001 
Brown1110± 1%
Red22100± 2%
Orange331,000 
Yellow4410,000 
Green55100,000± 0.5%
Blue661,000,000± 0.25%
Violet7710,000,000± 0.1%
Grey88 ± 0.05%
White99  
Gold  0.1± 5%
Silver  0.01± 10%
None   ± 20%

Let’s say we have a 4-band resistor with the following color codes: brown, black, brown, black. This can be decoded like this:

  • 1. band = brown = 1 digit
  • 2. band = black = 0 digit
  • 3. band = brown = x10 multiplier
  • 4. band = +/- 1% tolerance

So this is a 10×10=100-ohm resistor with a 1% tolerance. Try this out by using our Resistor Color Code Calculator or you can check it with the 4-band resistor color code chart below.

What are the resistor E-series stands for?

Resistor E-series are standard resistor values designed for inventory simplification. This means that although it is theoretically possible to produce resistors of any value only certain resistor values are available. Resistor E-series consists of the E3, E6, E12, E24, E48, E96, and E192 series, where the number after the ‘E’ designates the quantity of value “steps” in each series. The E-series of preferred numbers were chosen such that when a resistor is manufactured it will end up in a range of roughly equally spaced ohm values on a logarithmic scale.

Each resistor E-series subdivides each decade magnitude into steps of 3, 6, 12, 24, 48, 96, 192 values. Subdivisions of E3 to E96 ensure the maximum error will be divided in the order of 40%, 20%, 10%, 5%, 2%, 1%. Finally the E192 series contains 0.5%, 0.25% and 0.1% tolerance resistors.

As a result of this in real life, many combinations of the Resistor Color Code Calculator are not possible because of this resistor value standardization.

So here are the standard E-series resistor values:

E3 resistor values (40% tolerance)

  • 1.0, 2.2, 4.7

E6 values (20% tolerance)

  • 1.0, 1.5, 2.2, 3.3, 4.7, 6.8

E12 values (10% tolerance)

  • 1.0, 1.2, 1.5, 1.8, 2.2, 2.7, 3.3, 3.9, 4.7, 5.6, 6.8, 8.2

E24 values (5% tolerance)

  • 1.0, 1.1, 1.2, 1.3, 1.5, 1.6, 1.8, 2.0, 2.2, 2.4, 2.7, 3.0, 3.3, 3.6, 3.9, 4.3, 4.7, 5.1, 5.6, 6.2, 6.8, 7.5, 8.2, 9.1

E48 values (2% tolerance)

  • 1.00, 1.05, 1.10, 1.15, 1.21, 1.27, 1.33, 1.40, 1.47, 1.54, 1.62, 1.69, 1.78, 1.87, 1.96, 2.05, 2.15, 2.26, 2.37, 2.49, 2.61, 2.74, 2.87, 3.01, 3.16, 3.32, 3.48, 3.65, 3.83, 4.02, 4.22, 4.42, 4.64, 4.87, 5.11, 5.36, 5.62, 5.90, 6.19, 6.49, 6.81, 7.15, 7.50, 7.87, 8.25, 8.66, 9.09, 9.53

E96 values (1% tolerance)

  • 1.00, 1.02, 1.05, 1.07, 1.10, 1.13, 1.15, 1.18, 1.21, 1.24, 1.27, 1.30, 1.33, 1.37, 1.40, 1.43, 1.47, 1.50, 1.54, 1.58, 1.62, 1.65, 1.69, 1.74, 1.78, 1.82, 1.87, 1.91, 1.96, 2.00, 2.05, 2.10, 2.15, 2.21, 2.26, 2.32, 2.37, 2.43, 2.49, 2.55, 2.61, 2.67, 2.74, 2.80, 2.87, 2.94, 3.01, 3.09, 3.16, 3.24, 3.32, 3.40, 3.48, 3.57, 3.65, 3.74, 3.83, 3.92, 4.02, 4.12, 4.22, 4.32, 4.42, 4.53, 4.64, 4.75, 4.87, 4.99, 5.11, 5.23, 5.36, 5.49, 5.62, 5.76, 5.90, 6.04, 6.19, 6.34, 6.49, 6.65, 6.81, 6.98, 7.15, 7.32, 7.50, 7.68, 7.87, 8.06, 8.25, 8.45, 8.66, 8.87, 9.09, 9.31, 9.53, 9.76

E192 values (0.5% and lower tolerance)

  • 1.00, 1.01, 1.02, 1.04, 1.05, 1.06, 1.07, 1.09, 1.10, 1.11, 1.13, 1.14, 1.15, 1.17, 1.18, 1.20, 1.21, 1.23, 1.24, 1.26, 1.27, 1.29, 1.30, 1.32, 1.33, 1.35, 1.37, 1.38, 1.40, 1.42, 1.43, 1.45, 1.47, 1.49, 1.50, 1.52, 1.54, 1.56, 1.58, 1.60, 1.62, 1.64, 1.65, 1.67, 1.69, 1.72, 1.74, 1.76, 1.78, 1.80, 1.82, 1.84, 1.87, 1.89, 1.91, 1.93, 1.96, 1.98, 2.00, 2.03, 2.05, 2.08, 2.10, 2.13, 2.15, 2.18, 2.21, 2.23, 2.26, 2.29, 2.32, 2.34, 2.37, 2.40, 2.43, 2.46, 2.49, 2.52, 2.55, 2.58, 2.61, 2.64, 2.67, 2.71, 2.74, 2.77, 2.80, 2.84, 2.87, 2.91, 2.94, 2.98, 3.01, 3.05, 3.09, 3.12, 3.16, 3.20, 3.24, 3.28, 3.32, 3.36, 3.40, 3.44, 3.48, 3.52, 3.57, 3.61, 3.65, 3.70, 3.74, 3.79, 3.83, 3.88, 3.92, 3.97, 4.02, 4.07, 4.12, 4.17, 4.22, 4.27, 4.32, 4.37, 4.42, 4.48, 4.53, 4.59, 4.64, 4.70, 4.75, 4.81, 4.87, 4.93, 4.99, 5.05, 5.11, 5.17, 5.23, 5.30, 5.36, 5.42, 5.49, 5.56, 5.62, 5.69, 5.76, 5.83, 5.90, 5.97, 6.04, 6.12, 6.19, 6.26, 6.34, 6.42, 6.49, 6.57, 6.65, 6.73, 6.81, 6.90, 6.98, 7.06, 7.15, 7.23, 7.32, 7.41, 7.50, 7.59, 7.68, 7.77, 7.87, 7.96, 8.06, 8.16, 8.25, 8.35, 8.45, 8.56, 8.66, 8.76, 8.87, 8.98, 9.09, 9.20, 9.31, 9.42, 9.53, 9.65, 9.76, 9.88

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4-Band Resistor Color Code Calculator: red, yellow, grey, gold


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