Something I am a bit curious on, is just how much range a person can add to their voice via training or even surgery....

So, the lowest I can go is about 150hz, my male speaking voice seems to be about 170-180 and my normal female voice is about 200hz, I can push it up to 220 if I want, but much beyond I don't have any power to my voice. The thing is, the gap between 200 and 220 really seems to matter to how I perceive my voice when I hear it.

I am fine with putting fourth a bit of effort when I speak, but could I expand my range higher than it is now? I haven't done any exercises with the intention of increasing my pitch and I certainly haven't had an surgeries. Like is getting my normal female voice 20hz higher to that magic 220hz a realistic goal?

I am curious.  I developed my speaking voice some time ago and to my knowledge it has never caused me any problems or discomfort.  My question is are there any free apps that will tell me the MHz pitch of my voice?

It would be Hz or kHz, certainly not MHz.

You can use Praat to figure out your pitch.

Yes you can do it!

I can do it but you have to put the practice in to be able to achieve it and it takes a really long time. It took me about 3 years of practicing my voice before it was in the female range then about another year till that pitch felt comfortable. Fast forward to today and I'm able to get pretty high pitched when I'm excited like any other cis gal. I can sneeze, cough and laugh without breaking pitch. I recently found trying to speak in a male voice takes a lot of effort now, like I have to really focus to lower my pitch.

Ill post a voice recording later.

So you are talking about average pitch here or about the pitch range. For example my average pitch depends a lot on how much intonation and pitch range I use it can be as low as 100 Hz in my old voice if used monotonous or 170 Hz if I use a higher base pitch and a lot of intonation. My pitch range however would be 80 - 900 Hz, obvioulsy that is not useful for speaking. I personally think a pitch increase of about 30-40 Hz is what most people can do easily and most of that comes naturally by speaking in a different resonance. But more than that takes a bit more training and in some people it cannot go easily into a subconscious memory - and one has to do it right, so one does not squeeze the voice too much, which can cause hypertension dysphonia later

I'm untrained, and no surgery, and i can speak from around 120hz to 240 comfortable, with a range of up to whatever C5 is, i forget. Maximum change in pitch I know of for singers is around 7 octaves. Of course at some point you would just be speaking in falsetto so if you're asking for speaking then 200-220 is just fine. normal female range starts at 180 i believe