Hi David,
I find this useful tool online and I appreciate the effort you put on it.
Can I request for more circuit components? Like more standard resistors, capacitors, inductors and ICs.
I find a list of standard RLCs here:
http://www.rfcafe.com/references/electrical/inductor-values.htm
https://ecee.colorado.edu/~mcclurel/resistorsandcaps.pdf
Thank you!