Resistor Calculator
Resistor Colour Coding
1st colour ring
2nd colour ring
3rd colour ring
4th colour ring
Resistance value:
brown
red
orange
yellow
green
blue
purple
grey
white
brown
red
orange
yellow
green
blue
purple
grey
white
silver
gold
black
brown
red
orange
blue
green
brown
red
gold
silver
-
Ohm
Tolerance
Please note: This calculator only applies to resistors with 4 color codes.
Resistors in parallel
R1 =
Ohm
and
R2 =
Ohm
R
ges
=
Ohm
Equation used: Rtotal = (R1 * R2) / (R1 + R2)
Resistors in series
R1 =
Ohm
and
R2 =
Ohm
R
ges
=
Ohm
Equation used: Rtotal = R1 + R2
Notes:
Please enter decimal separators as "."
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