Chris Gillings

"I Make Things Work"


EIA Resistor Combination Calculator

Find the combinations of two or three resistors that equal a desired value.

Values used for the calculation cover the EIA values over the range 10 - 10000.

Resistor Range Tolerance Decade Values
E6 20% tolerance 10 15 22 33 47 68
E12 10% tolerance 10 12 15 18 22 27 33 39 47 56 68 82
E24 5% tolerance (and usually 2% tolerance) 10 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 56 62 68 75 82 91

Resistor Count Mode Accuracy
2 Series
3 Parallel

Desired Value