Resistor Color Code Table And CalculatorThis converter requires the use of Javascript enabled and capable browsers. For
operational and other information, and for those unable to use the
calculator because of browser limitations, there is a table below the
calculator and additional information below the table. For those in the
electronics business that are color blind (as I am), working with resistors and color coded capacitors can be difficult. This table names (as
well as shows) the colors and the values. To use the calculator, select a
value from the vertical group of Color Band 1, from Color Band 2 and from
Color Band 3. Immediately to the left of the Calculate Values button below
the three bands, there are three boxes that upon selection of a color from
the bands, an identifying number and color will correspond in appearance.
After selecting a value from all three bands, click on Calculate Values
and the resistor's value is calculated and will appear as well as a text
representation of the three bands. This calculator does not consider the
4th Band, tolerance, since it would not change the calculation. You may
change a value by again clicking on the band values from any of the three
bands but be sure to click on Calculate Values after each selection to
update the correct information of resistor value and color band text
representation.
| Band Color Options |
Band #1 Possible |
Band #2 Possible |
Band #3 Possible |
Multiplier Value For Band 3 |
Band #4 Value Tolerance |
Black |
|
0 |
1 |
1 |
|
Brown |
1 |
1 |
1 |
10 |
|
Red |
2 |
2 |
2 |
100 |
|
Orange |
3 |
3 |
3 |
1,000 |
|
Yellow |
4 |
4 |
4 |
10,000 |
|
Green |
5 |
5 |
5 |
100,000 |
|
Blue |
6 |
6 |
6 |
1,000,000 |
|
Violet |
7 |
7 |
|
10,000,000 |
|
Gray |
8 |
8 |
|
100,000,000 |
|
White |
9 |
9 |
|
1,000,000,000 |
|
None |
|
|
|
|
20% |
Silver |
|
|
|
|
10% |
Gold |
|
|
|
|
5% | | Version
Brown.Brown.Brown |
The resistor
color code is a long standing standard in both the electronics and
electrical industries, indicating the value of resistance of a resistor.
Resistance is measured in ohms and there is a foundation for it called
Ohm's Law. (Want to know about Ohm's Law? If so, please click here or
click here!) Each color band represents a number and the order of the
color band will represent a number value. The first 2 color bands
indicate a number. The 3rd color band indicates the multiplier or in
other words the number of zeros. The fourth band indicates the tolerance
of the resistor +/- 20%, 10% or 5%. In most cases, there are 4 color
bands. However, certain precision resistors have 5 bands or have the
values written on them, refining the tolerance value even more. There is
no standard (TANS) however, for the 5th band. From one manufacturing
company to another, the 5th band may indicate 2%, 1%, 1/2% or even
closer, according to their own standards. Color bands are usually found
on resistors that have a wattage value of 1/8 to 2 watts; though it is
rare, there are some 5 watt resistors that are banded. There are also
some capacitors that are color coded. See our Capacitor Color Code
Calculator.
|