There are several different ways to exchange bitcoins. You can change them in special forums (this is unsafe), you can sell your bitcoins in different markets, for example, Forex or something like that, but there you will need to register and I don’t know what commission and rate of the bitcoin is, it depends on a particular market, besides it will take time. You can also use the online exchanger, for example, this exchanger
https://hiribi.com/ has a good reputation and you will find many reviews about it on the Internet. I believe that this is really the easiest, safest and fastest way to convert your bitcoins into any currency.