Capacitor Code Calculator

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0.1uF to nF pF converter

pF, nF and µF converter with the printed code

Between picofarad, nanofarad and microfarad each step is a factor of 1,000: 0.1 µF is 100 nF, which is 100,000 pF. In the Value to code mode of the tool you enter the number and the unit and get the 3-digit code a factory would print, here 104.

The unit ladder and the worked conversions

The units form a ladder with a factor of a thousand: 1 mF = 1,000 µF, 1 µF = 1,000 nF and 1 nF = 1,000 pF. Going down a rung you multiply by 1,000 (the decimal point moves three places right); going up you divide by 1,000. Two rungs at once make a million: 1 µF = 1,000,000 pF. The tool works in picofarads internally and shows pF, nF, µF and mF side by side.
Four typical conversions. 0.1 µF × 1,000 = 100 nF, and × 1,000 again = 100,000 pF. 0.022 µF = 22 nF = 22,000 pF. 1,500 pF ÷ 1,000 = 1.5 nF = 0.0015 µF. 2.2 µF = 2,200 nF = 2,200,000 pF. Typing 0.1uF with a u instead of µ works, and the code field also accepts 100nF or 0.1µF to show every unit.
The code falls out of the picofarad figure: 100,000 pF = 10 × 10^4, so 104; 22,000 pF = 22 × 10^3, so 223; 1,500 pF = 15 × 10^2, so 152; 2,200,000 pF = 22 × 10^5, so 225. Only two significant digits fit in the code. A three-digit value such as 123 nF has no exact code: the nearest is 124 (120 nF), off by -2.44%, and the tool shows that error rather than hiding the rounding.

Value to code, checked

0.1 µF to code

Input: 0.1uF
Expected output: 104

0.1 µF = 100,000 pF = 10 × 10^4.

The same value in nF

Input: 100nF
Expected output: 104

Different units, same capacitor.

47 nF

Input: 47nF
Expected output: 473

47,000 pF = 47 × 10^3 (0.047 µF).

Fraction of a microfarad

Input: 0.022uF
Expected output: 223

0.022 µF = 22 nF = 22 × 10^3 pF.

Large picofarads

Input: 1500pF
Expected output: 152

1,500 pF = 15 × 10^2 (1.5 nF).

Whole microfarads

Input: 2.2uF
Expected output: 225

2.2 µF = 2,200,000 pF = 22 × 10^5.

Full tool FAQ

What is the value of a 104 capacitor?

104 is 10 × 10⁴ pF = 100,000 pF, which is 100 nF or 0.1 µF. It is not 104 pF. The same holds for other codes: the first two digits are the value and the third is the number of zeros.

How do I read a capacitor's 3-digit code?

What are capacitors 102, 103, 105, 224 and 473 worth?

What do the letters J, K and M after the code mean?

How do I convert pF, nF and µF?

What is 4n7, n47 or 4u7 on a capacitor?

What does 2R2 or 4R7 mean on a capacitor?

And a third digit of 8 or 9, as in 479?

Does the code give the capacitor's voltage?

How do I find the code for a 220 nF or 0.15 µF capacitor?

Frequently asked questions

How many nF and pF is 0.1 µF?

It is 100 nF and 100,000 pF. Multiply by 1,000 for every rung you go down: 0.1 × 1,000 = 100 and 100 × 1,000 = 100,000.

How do I convert from pF to µF?

Divide by 1,000,000, that is, move the decimal point six places to the left. For example, 4,700 pF divided by a million gives 0.0047 µF, which is 4.7 nF.

Is mF used on ordinary capacitors?

It is rare. 1 mF is 1,000 µF, large electrolytic territory, and it goes past what the code written by the tool reaches (up to 990 µF). The tool still shows the value in mF when it reads a code.

What if my value has no exact code?

With three significant digits the tool returns the nearest code and the error as a percentage. For 123 nF it suggests 124 (120 nF) and shows -2.44%, and you decide whether the gap suits the design.

Next steps

C	±0.25 pF
D	±0.5 pF
J	±5%
K	±10%
M	±20%
Z	−20% / +80%

±0.25 pF

±0.5 pF

±5%

±10%

±20%

−20% / +80%

Value	RKM	pF
10 pF	10p	10
15 pF	15p	15
22 pF	22p	22
33 pF	33p	33
47 pF	47p	47
68 pF	68p	68
100 pF	100p	100
150 pF	150p	150
220 pF	220p	220
330 pF	330p	330
470 pF	470p	470
680 pF	680p	680
1 nF	1n	1,000
1.5 nF	1n5	1,500
2.2 nF	2n2	2,200
3.3 nF	3n3	3,300
4.7 nF	4n7	4,700
6.8 nF	6n8	6,800
10 nF	10n	10,000
15 nF	15n	15,000
22 nF	22n	22,000
33 nF	33n	33,000
47 nF	47n	47,000
68 nF	68n	68,000
100 nF	100n	100,000
150 nF	150n	150,000
220 nF	220n	220,000
330 nF	330n	330,000
470 nF	470n	470,000
680 nF	680n	680,000
1 µF	1µ	1,000,000
1.5 µF	1µ5	1,500,000
2.2 µF	2µ2	2,200,000
3.3 µF	3µ3	3,300,000
4.7 µF	4µ7	4,700,000
6.8 µF	6µ8	6,800,000
10 µF	10µ	10,000,000

Value

Code

RKM

10 pF

10p

15 pF

15p

22 pF

22p

33 pF

33p

47 pF

47p

68 pF

68p

100 pF

100p

100

150 pF

150p

150

220 pF

220p

220

330 pF

330p

330

470 pF

470p

470

680 pF

680p

680

1 nF

1,000

1.5 nF

1n5

1,500

2.2 nF

2n2

2,200

3.3 nF

3n3

3,300

4.7 nF

4n7

4,700

6.8 nF

6n8

6,800

10 nF

10n

10,000

15 nF

15n

15,000

22 nF

22n

22,000

33 nF

33n

33,000

47 nF

47n

47,000

68 nF

68n

68,000

100 nF

100n

100,000

150 nF

150n

150,000

220 nF

220n

220,000

330 nF

330n

330,000

470 nF

470n

470,000

680 nF

680n

680,000

1 µF

1µ

1,000,000

1.5 µF

1µ5

1,500,000

2.2 µF

2µ2

2,200,000

3.3 µF

3µ3

3,300,000

4.7 µF

4µ7

4,700,000

6.8 µF

6µ8

6,800,000

10 µF

10µ

10,000,000

The unit ladder and the worked conversions

The units form a ladder with a factor of a thousand: 1 mF = 1,000 µF, 1 µF = 1,000 nF and 1 nF = 1,000 pF. Going down a rung you multiply by 1,000 (the decimal point moves three places right); going up you divide by 1,000. Two rungs at once make a million: 1 µF = 1,000,000 pF. The tool works in picofarads internally and shows pF, nF, µF and mF side by side.

Four typical conversions. 0.1 µF × 1,000 = 100 nF, and × 1,000 again = 100,000 pF. 0.022 µF = 22 nF = 22,000 pF. 1,500 pF ÷ 1,000 = 1.5 nF = 0.0015 µF. 2.2 µF = 2,200 nF = 2,200,000 pF. Typing 0.1uF with a u instead of µ works, and the code field also accepts 100nF or 0.1µF to show every unit.

The code falls out of the picofarad figure: 100,000 pF = 10 × 10^4, so 104; 22,000 pF = 22 × 10^3, so 223; 1,500 pF = 15 × 10^2, so 152; 2,200,000 pF = 22 × 10^5, so 225. Only two significant digits fit in the code. A three-digit value such as 123 nF has no exact code: the nearest is 124 (120 nF), off by -2.44%, and the tool shows that error rather than hiding the rounding.

Value to code, checked

0.1 µF to code

Input: 0.1uF
Expected output: 104

0.1 µF = 100,000 pF = 10 × 10^4.

The same value in nF

Input: 100nF
Expected output: 104

Different units, same capacitor.

47 nF

Input: 47nF
Expected output: 473

47,000 pF = 47 × 10^3 (0.047 µF).

Fraction of a microfarad

Input: 0.022uF
Expected output: 223

0.022 µF = 22 nF = 22 × 10^3 pF.

Large picofarads

Input: 1500pF
Expected output: 152

1,500 pF = 15 × 10^2 (1.5 nF).

Whole microfarads

Input: 2.2uF
Expected output: 225

2.2 µF = 2,200,000 pF = 22 × 10^5.

Full tool FAQ

What is the value of a 104 capacitor?

104 is 10 × 10⁴ pF = 100,000 pF, which is 100 nF or 0.1 µF. It is not 104 pF. The same holds for other codes: the first two digits are the value and the third is the number of zeros.

How do I read a capacitor's 3-digit code?

What are capacitors 102, 103, 105, 224 and 473 worth?

What do the letters J, K and M after the code mean?

How do I convert pF, nF and µF?

What is 4n7, n47 or 4u7 on a capacitor?

What does 2R2 or 4R7 mean on a capacitor?

And a third digit of 8 or 9, as in 479?

Does the code give the capacitor's voltage?

How do I find the code for a 220 nF or 0.15 µF capacitor?

Frequently asked questions

How many nF and pF is 0.1 µF?

It is 100 nF and 100,000 pF. Multiply by 1,000 for every rung you go down: 0.1 × 1,000 = 100 and 100 × 1,000 = 100,000.

How do I convert from pF to µF?

Divide by 1,000,000, that is, move the decimal point six places to the left. For example, 4,700 pF divided by a million gives 0.0047 µF, which is 4.7 nF.

Is mF used on ordinary capacitors?

It is rare. 1 mF is 1,000 µF, large electrolytic territory, and it goes past what the code written by the tool reaches (up to 990 µF). The tool still shows the value in mF when it reads a code.

What if my value has no exact code?

With three significant digits the tool returns the nearest code and the error as a percentage. For 123 nF it suggests 124 (120 nF) and shows -2.44%, and you decide whether the gap suits the design.

Capacitor Code Calculator

Continue in the tool

More pages for this tool

pF, nF and µF converter with the printed code

The unit ladder and the worked conversions

Value to code, checked

0.1 µF to code

The same value in nF

47 nF

Fraction of a microfarad

Large picofarads

Whole microfarads

Full tool FAQ

Frequently asked questions

How many nF and pF is 0.1 µF?

How do I convert from pF to µF?

Is mF used on ordinary capacitors?

What if my value has no exact code?

Next steps

Capacitor Code Calculator

E6 series values, 10 pF to 10 µF

Continue in the tool

More pages for this tool

pF, nF and µF converter with the printed code

The unit ladder and the worked conversions

Value to code, checked

0.1 µF to code

The same value in nF

47 nF

Fraction of a microfarad

Large picofarads

Whole microfarads

Full tool FAQ

Frequently asked questions

How many nF and pF is 0.1 µF?

How do I convert from pF to µF?

Is mF used on ordinary capacitors?

What if my value has no exact code?

Next steps

E6 series values, 10 pF to 10 µF