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# Calculate resistance

With this resistance calculator you can easily calculate the value of your resistance. When you enter the colors of your resistor, the calculator will immediately calculate the value.

## Number of rings

Pick a color

• 0Black
• 1Brown
• 2Red
• 3Orange
• 4Geel
• 5Green
• 6Blue
• 7Violet
• 8Grey
• 9White

Pick a color

• 0Black
• 1Brown
• 2Red
• 3Orange
• 4Geel
• 5Green
• 6Blue
• 7Violet
• 8Grey
• 9White

### Multiplier

Pick a color

• × 1 ΩBlack
• × 10 ΩBrown
• × 100 ΩRed
• × 1 kΩOrange
• × 10 kΩGeel
• × 100 kΩGreen
• × 1 MΩBlue
• × 10 MΩViolet
• × 100 MΩGrey
• × 1 GΩWhite
• × 0.1 ΩGold
• × 0.01 ΩSilver

### Tolerance

Pick a color

• ± 1%Brown
• ± 2%Red
• ± 0.5%Green
• ± 0.25%Blue
• ± 0.1%Violet
• ± 0.05%Grey
• ± 5%Gold
• ± 10%Silver -
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### Resistor value:

Turn your phone to use the calculator

## How do you calculate which resistance you need?

You can calculate the resistance (R) using Ohm's law (Ω). To calculate the resistance you need to know how much current (I) and voltage (U) you have. The formula that goes with this is:
U = I x R
However, the above formula is suitable for calculating the voltage. We want to know R. Therefore, the formula must be converted. The formula you need to calculate the resistance is:
R = U / I
(Resistance = Voltage / Current) The rating of www.elektronicavoorjou.nl at webwinkelkeurmerk.com is 9.2/10 based on 838 reviews.