Parallel Resistor Calculator

Problem:
What is the best set of parallel resistors to reach a non-standard value?

Solution:
Use the Javascript calculator below:

Enter Desired Resistance:
Select Sequence:
 
 
Resistor 1 (Ohms) Resistor 2 (Ohms)
 
Actual Resistance:
Error (%):

NOTES

  1. Calculator version 2, 6-16-2003.
  2. Javascript compatibility: IE6+, Netscape 6+, Mozilla 1.3+, Opera 7+.
  3. Different sets of resistor values may lead to the same identical lowest error. Up to 10 sets of resistors may be presented, or as few as one. More than 10 sets of resistors may produce the same lowest error, but only the first 10 will be presented. All will produce identical lowest error when used.
  4. Quantization errors in resistor values are inherent to Javascript. Results should be interpreted to the nearest standard value when a quantization error appears.