Capacitor Code Calculator
Enter a 3-digit capacitor code to instantly decode it to pF, nF, and uF — or enter a capacitance to find its code.
Digits 1–2: base value in pF | Digit 3: multiplier (0–9)
Quick Reference — Common Codes
Enter a capacitor code or value to see results.
Decoded Capacitance
Picofarads (pF)
Nanofarads (nF)
Microfarads (uF)
Code Breakdown
Encoded Capacitor Code
3-Digit Code
Actual value (pF)
Actual value (nF)
Actual value (uF)
Multiplier Reference Table
| Digit | Multiplier | Example (base 10) | Result |
|---|---|---|---|
| 0 | ×1 | 100 | 100 pF |
| 1 | ×10 | 101 | 100 pF |
| 2 | ×100 | 102 | 1,000 pF = 1 nF |
| 3 | ×1,000 | 103 | 10,000 pF = 10 nF |
| 4 | ×10,000 | 104 | 100,000 pF = 100 nF |
| 5 | ×100,000 | 105 | 1,000,000 pF = 1 uF |
| 6 | ×1,000,000 | 106 | 10,000,000 pF = 10 uF |
| 8 | ×0.01 | 108 | 1 pF (rare) |
| 9 | ×0.1 | 229 | 2.2 pF (rare) |
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Summary
Enter a 3-digit capacitor code to instantly decode it to pF, nF, and uF — or enter a capacitance to find its code.
How it works
- Enter the 3-digit code printed on the capacitor body (e.g. 104).
- The first two digits (10) are the base capacitance in pF.
- The third digit (4) is the exponent: multiply by 10^4 = 10,000.
- Result: 10 × 10,000 = 100,000 pF = 100 nF = 0.1 uF.
- Use the Encode tab to go in reverse — type a capacitance and get the code.
Use cases
- Identify an unmarked or hard-to-read capacitor on a PCB.
- Verify capacitor values when building or repairing circuits.
- Convert between pF, nF, and uF without manual calculation.
- Cross-reference capacitor codes when substituting components.
- Teach students the standard capacitor marking convention.
- Quickly encode a desired capacitance value into its 3-digit code for ordering.
Frequently Asked Questions
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Last updated: 2026-05-23 ·
Reviewed by Nham Vu