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Capacitor Code Calculator
Decode SMD capacitor markings (104, 473, etc.) to actual capacitance values.
Capacitance Value
Click any value to copy
Tolerance Codes
B = ±0.1%
C = ±0.25%
D = ±0.5%
F = ±1%
G = ±2%
J = ±5%
How Capacitor Codes Work
Most ceramic and film capacitors use a 3-digit code. The first two digits are the significant figures, and the third digit is the multiplier (number of zeros to add). The result is in picofarads (pF).
104 = 10 × 104 = 100,000 pF = 100 nF = 0.1 μF
Common Capacitor Codes
| Code | pF | nF | μF |
|---|---|---|---|
| 100 | 10 pF | 0.01 nF | 0.00001 μF |
| 101 | 100 pF | 0.1 nF | 0.0001 μF |
| 102 | 1,000 pF | 1 nF | 0.001 μF |
| 103 | 10,000 pF | 10 nF | 0.01 μF |
| 104 | 100,000 pF | 100 nF | 0.1 μF |
| 105 | 1,000,000 pF | 1,000 nF | 1 μF |
| 220 | 22 pF | 0.022 nF | 0.000022 μF |
| 221 | 220 pF | 0.22 nF | 0.00022 μF |
| 222 | 2,200 pF | 2.2 nF | 0.0022 μF |
| 223 | 22,000 pF | 22 nF | 0.022 μF |
| 224 | 220,000 pF | 220 nF | 0.22 μF |
| 473 | 47,000 pF | 47 nF | 0.047 μF |
Frequently Asked Questions
What does 104 mean on a capacitor?
104 means 10 × 10⁴ pF = 100,000 pF = 100 nF = 0.1 μF. This is one of the most common capacitor values.
What about codes like 4R7 or 2n2?
Some capacitors use R or n notation. 4R7 = 4.7 pF (R marks decimal point in pF). 2n2 = 2.2 nF (n marks decimal point in nF).
What do tolerance letters mean?
Common tolerance codes: J = ±5%, K = ±10%, M = ±20%. For example, "104K" means 100nF ±10%.