How to Read Color Codes From Resistors.
Intro: How to Read Color Codes From Resistors.
The value of the resistor is marked on the body using colors. Every color is different number and you can remember these numbers or you can just use the table on next step. OR there are much resistor calculators that you can use. It's for the laziest people :D . However it's your decision ,and I will show you all ways to calculate resistor value.
Colors
Here is the table with the colors and numbers. As you can see they are:
Calculator
Resistor color code calculator
If you are too lazy to think about colors and digits and mat ... this is for you :) :D
Examples
Exemple: If first color is RED ,second is RED ,third is BLACK and the last is SILVER it means:
RED - 2 -- RED - 2 -- YELLOW - x10000 -- SILVER - 10% so...
2 2 0000 +/- 10% * 2 2 0000 so... :D
220000 +/- 22000
This is 220 000 Ohm or 220 kOhm
or 220 000 - 22 000 Ohm or 220 - 22 kOhm
or 220 000 + 22 000 Ohm or 220 + 22 kOhm
Hope you got it :)
Exercises
Now some exercises :)
Try to calculate resistors' values from third and forth picture.
Answers are below.
Answers
The first one is : 11000 = 11k ohms
The second one is : 1000 = 1k ohms
The both are with gold color for the tolerance ,it means 5%.
It's your answer? I hope so :)
Colors
Here is the table with the colors and numbers. As you can see they are:
- BLACK: 0
- BROWN: 1
- RED: 2
- ORANGE: 3
- YELLOW: 4
- GREEN: 5
- BLUE: 6
- VIOLET: 7
- GREY: 8
- WHITE: 9
- BLACK: 1
- BROWN: 10
- RED: 100
- ORANGE: 1000
- YELLOW: 10000
- GREEN: 100000
- BLUE: 1000000
- GOLD: 0.1
- SILVER: 0.01
- BROWN: 1%
- RED: 2%
- GOLD: 5%
- SILVER: 10%
- NOTHING: 20%
Calculator
Resistor color code calculator
If you are too lazy to think about colors and digits and mat ... this is for you :) :D
Examples
Exemple: If first color is RED ,second is RED ,third is BLACK and the last is SILVER it means:
RED - 2 -- RED - 2 -- YELLOW - x10000 -- SILVER - 10% so...
2 2 0000 +/- 10% * 2 2 0000 so... :D
220000 +/- 22000
This is 220 000 Ohm or 220 kOhm
or 220 000 - 22 000 Ohm or 220 - 22 kOhm
or 220 000 + 22 000 Ohm or 220 + 22 kOhm
Hope you got it :)
Exercises
Now some exercises :)
Try to calculate resistors' values from third and forth picture.
Answers are below.
Answers
The first one is : 11000 = 11k ohms
The second one is : 1000 = 1k ohms
The both are with gold color for the tolerance ,it means 5%.
It's your answer? I hope so :)
22 Comments
michael.swinney 9 years ago
In your example you give the color code -(red, red, black, silver)-
"it means: RED = 2, RED = 2, YELLOW=(x10000), SILVER = 10%"
Shouldn’t it be: red = 2, red = 2, BLACK = (x1), silver = +/-10%
22*1 = 22+/-10%
Wanka7a 9 years ago
mirlatif 7 years ago
ha ha ha
plesperance 7 years ago
Anyone know a reverse resistor calculator?
cjjam 7 years ago
im just already highschool but i dont understand!
cjjam 7 years ago
difficult!
JLoPhysics 8 years ago
You mention that you read from left to right - but if you flip the resistor over, these directions are reveresed. How do I know which side is 'left' on a resistor?
ivan.toopi 7 years ago
The band with the metallic paint (Gold Silver etc.etc), is the 'right side' All other banding generally is done in block colour (Standardized colours used in electronics)
J-Five 8 years ago
It's the closest band to end of the resistor.
TanjotP 8 years ago
Hey, I can answer that question for you, if you haven't found your answer quite yet. The tolerance band should be on the far right when you are looking at it. It could be Gold(5%) or Silver(10%). This means it should be xcolour, ycolour, zcolour and then your gold or silver tolerance band when you look at it. This way it is consistent and is facing the right way in order to measure the resistance when going to calculate it. As for putting your resistor in a circuit, well resistors are not polarized , therefore you can put them in any way. Good luck!
plesperance 8 years ago
How do you know which end to decipher the color code.
MohammedW6 8 years ago
thanks a lot
KevinJ96 8 years ago
This was so helpful. I had a booklet that tried to explain it, but chose the most difficult way to explain something that it turns out is really easy! Although, as pointed out already, your answers are switched. Made me double-check my answers though, so maybe not a bad thing!
KayodeO1 8 years ago
Hi, I think the answers are switched
MikeH130 8 years ago
The answers are switched. Using the tool provided, the first resistor is actually the second answer.
SaryaT 8 years ago
how will be if you have given colour code indigo, red, red and gold
SaryaT 8 years ago
how will be if you have given colour code indigo, red, red and gold
alit3 9 years ago
Thank you for information . you help me :-)
liama1 9 years ago
soooooooo
liama1 9 years ago
Are you scared