There are many different online platforms for cryptocurrency exchange and conversion. As far as I know, even some banks already accept bitcoins for conversion.
I think the easiest way is online exchangers. It's available 24/7. But the conditions for conversion may differ in different exchangers. I once sold satoshi and have already studied it.
Therefore, I can advise you to look here https://www.bestchange.com/bitcoin-to-dollar-cash.html information about exchangers and how you can convert bitcoin to cash. This service has collected a lot of information on its page from different exchangers.
In the near future, I do not plan to change my bitcoins at all, because I am sure that the price will rise. In addition, I started to make good money by trading on the stock exchanges. By the way, I want to tell you how to calculate crypto gains, because it will be useful for every cryptocurrency owner. It seems to me that there is a great future behind bitcoins.
In general, not so long ago I decided that I should change my job and everyone advised me to try trading, but in order for it to work better, you should pay attention to the site http://usforexbrokers.com/reviews/ig/ where you can read reviews about brokers and choose the right one for yourself. I wish you good luck!