Calculators » Resistor Calculator: Calculate Resistance Easily

Resistor Calculator: Calculate Resistance Easily

electronic component resistor resistance color code calculator

This page covers a resistor calculator used to calculate resistance.

This resistor calculator takes numeric values of four bands as inputs from the user and produces a resistance value as output.

The rule for the resistance calculator is also mentioned.

Inputs

Outputs

EXAMPLE:

  • 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

The following equation or formula is used for this resistor calculator.

resistance formula for resistor calculator

Resistor Color Code Table

This table is useful for the above-mentioned resistance calculator.

ColorBand1Band2Band3 (No. of Zeros)Multiplier BandBand4 Tolerance
Black-0x1 (0)--
Brown11x10 (1)-+/-1%
Red22x100 (2)-+/-2%
Orange33x1000 (3)-+/-3%
Yellow44x10K (4)-+/-4%
Green55x100K (5)-+/-0.5%
Blue66x1M (6)-+/-0.25%
Violet77x10M (7)-+/-0.10%
Grey88x100M (8)-+/-0.05%
White99x1G (9)--
Gold----+/-5%
Silver----+/-10%