No, not looking for an app or website. I want a handheld calculator that I can program with simple steps.
I too am answering against your stated wishes, but here is what I do. I loath computer GUI calculators. A mouse has to be the worst cacluator user interface ever. I used to have a Radio Shack pocket computer (that someone gave me) that I could program simple things like you want. Long abandoned. I wrote a C program to make my own calculator in 2002. It just operates on a command line, no GUI. When I wanted a new function, I'd add it. I made it so that can run a sequence of functions (like what you want), but in the end I never use that. Over a year, I had added all the functions that I routinely want to do, so I didn't have to program. I haven't modified it since 2003. I keep a CASIO scientific on my desk, and use the C program for more complicated stuff. So if I want to see what inductor resonates with a 1000pF cap at 100MHz (like your example), I type:
ca (my program name in a DOS window or Unix shell)
fr100MHz
1000p
res
It uses a RPN stack, because that made it brainless to write the program (not that I'm a fan of RPN calculators). I put all the conversions I normally do like S to Z, peak to RMS, dBm to watts, etc. (s2Z, Z2s, p2r, r2p, d2w, v2d, ...). Everything is complex.
Anyway, that's how I solved the problem for myself. I only wrote it for me; have never shared it. You can have it if you'd like. Compiles on command line with gcc.