Enter resistance value (supports k, M).
EIA-96 uses two numbers + one letter. Example: 68X = 499 × 0.1 = 49.9 Ω.
Multiplier letters: Z=0.001, Y/R=0.01, X/S=0.1, A=1, B/H=10, C=100, D=200, E=250, F=500.
| Color | Digit | Multiplier | Tolerance |
|---|
4-band: two significant digits, multiplier, tolerance. 5-band: three significant digits for higher precision. 6-band: adds a temperature coefficient band.
The tolerance band (often gold/silver) is spaced farther from the others, or the band closest to a lead is the first digit.
As tolerance: gold = ±5%, silver = ±10%. As multiplier: gold = 0.1, silver = 0.01 (only in multiplier position).
3-digit: first two digits are value, third is multiplier (e.g., 103 = 10 × 10³ = 10kΩ). 4-digit: first three digits value, fourth multiplier (e.g., 1002 = 100 × 10² = 10kΩ). EIA-96: two numbers + letter, using a lookup table.
Used for high-precision SMD resistors (1% tolerance). A two-digit code (01-96) represents a base value, and a letter indicates the multiplier.
Our algorithm finds the closest standard E-series value and suggests the color code. For exact match, use preferred values.
3-band resistors omit the tolerance band (assumed ±20%). They are less common today.
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A resistor is a passive component that limits current. Resistance is measured in ohms (Ω). Color bands or SMD codes indicate its value and tolerance. Common series include E12, E24, E96. Use our calculator for through-hole and surface-mount resistors. Perfect for students, hobbyists, and engineers.