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resistor calculator | resistance calculator

This page covers resistor calculator used to calculate resistance. This resistor calculator takes numeric values of four bands as inputs from user and produces resistance value as output. The rule for the resistance calculator is also mentioned.

Band-1 Digit from table-1 (input1) :

Band-2 Digit from table-2 (input2) :

Band-3 No. of zeros from table-1 (input3) :

Resistance in Ohms (output1) :

*Note: Enter values in INPUT boxes and Press CALCULATE button to check OUTPUTS.

EXAMPLE of capacitor calculator:
INPUTS: Band1= 6, Band2= 5, Band3 = 2 (i.e. 2 zeros of x100 in third band)
OUTPUT: 6500 Ohm or 6.5K Ohms, Check for tolerance as per Band4 and table-1 below. For Gold, Tolerance is +/-5%.

Resistor formula used for resistor calculator

Following equation or formula is used for this resistor calculator.

resistance formula for resistor calculator
Color Band1 Band2 Band3(No. of Zeros)
Multiplier band
Black - 0 x1 (0) -
Brown 1 1 x10 (1) +/-1%
Red 2 2 x100 (2) +/-2%
Orange 3 3 x1000(3) +/-3%
Yellow 4 4 x10K (4) +/-4%
Green 5 5 x100K (5) +/-0.5%
Blue 6 6 x1M (6) +/-0.25%
Violet 7 7 x10M (7) +/-0.10%
Grey 8 8 x100M (8) +/-0.05%
White 9 9 x1G (9) -
Gold - - - +/-5%
Silver - - - +/-10%

This table is useful for the above mentioned resistance calculator.

Useful converters and calculators

Following is the list of useful converters and calculators.

dBm to Watt converter
Stripline Impedance calculator
Microstrip line impedance
Antenna G/T
Noise temp. to NF


Refer Ohm Law
Refer Inductor basics
Refer Resistor basics
Refer Capacitor basics

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