Resistor Color Code Calculator.

Instantly find the color code that matches your resistor's value with our calculator. Enter the desired resistance and see the corresponding color bands. The tool supports 3 band, 4 band, 5 band, and 6-band resistors, along with all standard resistor series E6, E12, E24, E48, E96, and E192. A must-have for anyone designing, repairing, or analyzing electronic circuits with precision.

3 Band Resistor Color Code.

3-band resistors display two significant digits and a multiplier. They're typically used for wide-tolerance applications. Example: 27 kΩ = Red – Violet – Orange

4 Band Resistor Color Code.

4-band resistors include a tolerance band for more accurate resistance values. Example: 1,000 Ω ±5% = Brown – Black – Red – Gold

5 Band Resistor Color Code

5-band resistors provide higher accuracy and are commonly used in precision circuits.Example: 10.0 kΩ ±1% = Brown – Black – Black – Red – Brown

6 Band Resistor Color Code

6-band resistors add a sixth band that indicates the temperature coefficient , ideal for temperature-sensitive environments. Example: 68.0 kΩ ±1%, 50 ppm/°C = Blue – Gray – Black – Red – Brown – Red

Understanding Standard Resistor Series (E6, E12, E24, E48, E96, E192)

Resistors are not manufactured for every possible value. To standardize production and ensure consistent tolerances, resistor values are grouped into standard series, defined by the IEC 60063 standard. Each series (E6, E12, E24, E48, E96, E192) contains a fixed number of values per decade (e.g., between 10 Ω and 100 Ω), spaced logarithmically . The higher the series number, the greater the precision and variety of available resistor values.

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Series and Their Typical Tolerances:

• E6 → 6 values per decade → ±20% tolerance
• E12 → 12 values per decade → ±10% tolerance
• E24 → 24 values per decade → ±5% tolerance
• E48 → 48 values per decade → ±2% tolerance
• E96 → 96 values per decade → ±1% tolerance
• E192 → 192 values per decade → ±0.5% or better