Capacitor Code Calculator
Decode standard 3-digit capacitor markings including Tolerance and Dielectric types. Supports ceramic, film, and tantalum codes.
Includes a Reverse Lookup tool to find codes for specific values and an E-Series Checker to validate standard parts.
Configuration
Waiting…Preview
How to Use
Decode ceramic, film, and tantalum capacitor markings.
Enter the Code
Input the 3-digit number found on the capacitor body (e.g., 104). The tool immediately calculates the pF, nF, and µF values.
Set Specifications
Select the Tolerance (e.g., J, K) and Dielectric (e.g., X7R, NP0) if visible. This updates the full specification and component preview.
Reverse Lookup
Need a code? Type a value like “0.1uF” or “470pF” in the yellow box to find the correct marking code.
Common Capacitor Codes Chart
Ceramic capacitors use a 3-digit EIA code where the first two digits are the significant figures and the third is the multiplier (number of zeros). Here are the most common values used in electronics:
| Code | Picofarads (pF) | Nanofarads (nF) | Microfarads (µF) | Common Usage |
|---|---|---|---|---|
| 102 | 1,000 pF | 1.0 nF | 0.001 µF | High Frequency Filtering |
| 103 | 10,000 pF | 10 nF | 0.01 µF | Noise Suppression |
| 104 | 100,000 pF | 100 nF | 0.1 µF | Bypass / Decoupling (Standard) |
| 224 | 220,000 pF | 220 nF | 0.22 µF | Timing Circuits |
| 474 | 470,000 pF | 470 nF | 0.47 µF | Audio Coupling |
| 105 | 1,000,000 pF | 1,000 nF | 1.0 µF | Power Supply Filtering |