The wizard allows to calculate the optimum couple of standard serie resistors to build a resistor voltage divider.
You can either choose to enter the input and output voltage values, or to enter the gain (< 1) of the voltage divider directly.
The result table shows the better couple of resistors, along with alternative solutions sorted in increasing error order.
The images on the right shows the actual color bands or SMD marking code present on the real resistors for the selected solution.
Currently displaying an example (output voltage of 3V and E12 serie).
Enter your own values in the boxes below and click on the compute button.
Vout
R1
R2
Error
2.02899
8.2K Ω
5.6K Ω
32.37%
2.02970
12K Ω
8.2K Ω
32.34%
2.04348
6.8K Ω
4.7K Ω
31.88%
2.04545
39K Ω
27K Ω
31.82%
2.05263
56K Ω
39K Ω
31.58%
2.06250
47K Ω
33K Ω
31.25%
2.22222
15K Ω
12K Ω
25.93%
2.24490
27K Ω
22K Ω
25.17%
2.25000
22K Ω
18K Ω
25%
2.25000
33K Ω
27K Ω
25%
2.25275
10K Ω
8.2K Ω
24.91%
2.25806
6.8K Ω
5.6K Ω
24.73%
2.26667
8.2K Ω
6.8K Ω
24.44%
2.26744
47K Ω
39K Ω
24.42%
2.27273
12K Ω
10K Ω
24.24%
2.27273
18K Ω
15K Ω
24.24%
2.28155
5.6K Ω
4.7K Ω
23.95%
2.29167
39K Ω
33K Ω
23.61%
2.50000
10K Ω
10K Ω
16.67%
2.50000
12K Ω
12K Ω
16.67%
2.50000
15K Ω
15K Ω
16.67%
2.50000
18K Ω
18K Ω
16.67%
2.50000
22K Ω
22K Ω
16.67%
2.50000
27K Ω
27K Ω
16.67%
2.50000
33K Ω
33K Ω
16.67%
2.50000
39K Ω
39K Ω
16.67%
2.50000
47K Ω
47K Ω
16.67%
2.50000
5.6K Ω
5.6K Ω
16.67%
2.50000
6.8K Ω
6.8K Ω
16.67%
2.50000
8.2K Ω
8.2K Ω
16.67%
2.70833
33K Ω
39K Ω
9.72%
2.71845
4.7K Ω
5.6K Ω
9.39%
2.72727
10K Ω
12K Ω
9.09%
2.72727
15K Ω
18K Ω
9.09%
2.73256
39K Ω
47K Ω
8.91%
2.73333
6.8K Ω
8.2K Ω
8.89%
2.74194
5.6K Ω
6.8K Ω
8.6%
2.74725
8.2K Ω
10K Ω
8.42%
2.75000
18K Ω
22K Ω
8.33%
2.75000
27K Ω
33K Ω
8.33%
2.75510
22K Ω
27K Ω
8.16%
2.77778
12K Ω
15K Ω
7.41%
2.93750
33K Ω
47K Ω
2.08%
2.94737
39K Ω
56K Ω
1.75%
2.95455
27K Ω
39K Ω
1.52%
2.95652
4.7K Ω
6.8K Ω
1.45%
2.97030
8.2K Ω
12K Ω
0.99%
2.97101
5.6K Ω
8.2K Ω
0.97%
2.97297
15K Ω
22K Ω
0.9%
2.97619
6.8K Ω
10K Ω
0.79%
3.00000
10K Ω
15K Ω
0%
3.00000
12K Ω
18K Ω
0%
3.00000
18K Ω
27K Ω
0%
3.00000
22K Ω
33K Ω
0%
3.14607
33K Ω
56K Ω
4.87%
3.17568
27K Ω
47K Ω
5.86%
3.17757
3.9K Ω
6.8K Ω
5.92%
3.17829
4.7K Ω
8.2K Ω
5.94%
3.19149
6.8K Ω
12K Ω
6.38%
3.19672
22K Ω
39K Ω
6.56%
3.20513
5.6K Ω
10K Ω
6.84%
3.21429
10K Ω
18K Ω
7.14%
3.21429
15K Ω
27K Ω
7.14%
3.23276
8.2K Ω
15K Ω
7.76%
3.23529
12K Ω
22K Ω
7.84%
3.23529
18K Ω
33K Ω
7.84%
3.36634
3.3K Ω
6.8K Ω
12.21%
3.37349
27K Ω
56K Ω
12.45%
3.38843
3.9K Ω
8.2K Ω
12.95%
3.40136
4.7K Ω
10K Ω
13.38%
3.40580
22K Ω
47K Ω
13.53%
3.40909
5.6K Ω
12K Ω
13.64%
3.42105
18K Ω
39K Ω
14.04%
3.43511
8.2K Ω
18K Ω
14.5%
3.43750
10K Ω
22K Ω
14.58%
3.43750
15K Ω
33K Ω
14.58%
3.44037
6.8K Ω
15K Ω
14.68%
3.46154
12K Ω
27K Ω
15.38%
3.56522
3.3K Ω
8.2K Ω
18.84%
3.57895
27K Ω
68K Ω
19.3%
3.58974
22K Ω
56K Ω
19.66%
3.59281
4.7K Ω
12K Ω
19.76%
3.59712
3.9K Ω
10K Ω
19.9%
3.61111
15K Ω
39K Ω
20.37%
3.61538
18K Ω
47K Ω
20.51%
3.62903
6.8K Ω
18K Ω
20.97%
3.64078
5.6K Ω
15K Ω
21.36%
3.64238
8.2K Ω
22K Ω
21.41%
3.64865
10K Ω
27K Ω
21.62%
3.66667
12K Ω
33K Ω
22.22%
3.75940
3.3K Ω
10K Ω
25.31%
3.76147
2.7K Ω
8.2K Ω
25.38%
3.77358
3.9K Ω
12K Ω
25.79%
3.77778
22K Ω
68K Ω
25.93%
3.78378
18K Ω
56K Ω
26.13%
3.79032
15K Ω
47K Ω
26.34%
3.80711
4.7K Ω
15K Ω
26.9%
3.81356
5.6K Ω
18K Ω
27.12%
3.81944
6.8K Ω
22K Ω
27.31%
3.82353
12K Ω
39K Ω
27.45%
First two bands are the mantissa, 3rd is the exponent and 4th is the tolerance
4-band code cannot be used for an E48E96E192 resistor
First three bands are the mantissa, 4th is the exponent and 5th is the tolerance
5-band code is usually only used for E48, E96 and E192, but this is how it would looks like on an E6E12E24 resistor
First two digits are the mantissa, 3rd is the exponent
E96 resistors are coded using the EIA-96 code
Sometimes H, S, R are used instead of B, X, Y respectively
Sometimes H, S, R are used instead of B, X, Y respectively
3-digit code cannot be used for E48E192 resistors
First three digits are the mantissa, 4th is the exponent
4-digit code is usually only used for E48, E96 and E192, but this is how it would looks like on an E6E12E24 resistor