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What is the color ring resistor calculator?
The resistor color code calculator is a practical tool that helps users quickly interpret the color band markings on resistors. Common color-coded resistors typically use 4, 5, or 6 bands to represent their resistance value, tolerance range, and temperature coefficient.
Users no longer need to manually reference charts—simply select the colors to instantly obtain the corresponding resistance value and tolerance range. This not only improves identification efficiency but also effectively avoids errors caused by manual judgment.
This online calculator supports 4-band, 5-band, and 6-band resistor decoding. By selecting each band’s color via dropdown menus, the system automatically calculates the actual resistance value, displays it in standard units (Ω, kΩ, MΩ), and clearly lists the allowable tolerance range. This streamlined process aids users in quickly comparing component parameters during circuit design, repairs, and educational experiments.
Four-color ring resistor calculator
Select the color of the four-color ring resistor and automatically obtain the resistance value and tolerance.
Calculation result: --
Five-color ring resistor calculator
Select the color of the five-color ring resistor and automatically get the resistance value and tolerance.
Calculation result: --
Six-color ring resistor calculator
Select the color of the six-color ring resistor and calculate the resistance, tolerance and temperature coefficient.
Calculation result: --
FAQ
Where do I start reading the color sequence of a color band resistor?
Usually, I start reading from the end farthest from the tolerance band. If there is a gold or silver band, it is usually on the far right.
How accurate can a resistor with four color bands be?
The tolerance of a resistor with four color bands is usually ±1%, ±2%, ±5%, or ±10%, depending on the color of the tolerance band.
Are five- or six-band resistors more accurate than four-color resistors?
Yes, five- and six-band resistors can express more significant digits, are usually used in more precise applications, and allow for a smaller error range.
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