Resistor / Capacitor Calculator

Problem:
How do I determine the optimum component values for a single pole RC filter?

Solution:
Use the Javascript calculator below.
Enter Desired Resonant Frequency (Hz):
Select Resistor Sequence:
Select Capacitor Sequence:
Select Resistor Scale (Ohms):
  
Capacitor (pF)Resistor (Ohms)
 
Actual Frequency (Hz):
Error (%):

NOTES

  1. Version 4, 4-29-2003
  2. Browser compatibility: IE6+, Netscape 6+, Mozilla 1.3+, Opera 7+
  3. Different sets of RC values may lead to the same identical lowest error. Up to 10 sets of RC choices may be presented, or as few as one. All will produce identical lowest error when used.
  4. It may be advantageous to try E6 and E12 sets of capacitors - in many cases the error will be only slightly worse than with E24, and procurement may be much easier!
  5. Quantization errors in capacitor and resistor values are inherent to Javascript. Instead of using advanced Javascript functions that would make the script incompatible with older browsers, I elected to leave the quantization errors. Results should be interpreted to the nearest standard value when a quantization error appears.