Since SBD has been trading at around $1 USD recently, a lot of users have been asking about the conversion function. This post will explain how to use the SBD->STEEM conversion function with SteemConnect.
A special thank you to 
Conversions are a function built into the Steem blockchain that allows a user with SBD tokens to convert them into "approximately $1 USD worth of STEEM".
The way the conversion process works is that when someone initiates a conversion of SBD, it removes the SBD from the user's active/available balance, and moves it into their conversion balance. It sits in their conversion balance for 3.5 days. At the end of the 3.5 days, it takes the median price feed value from the witness price feed across the 3.5 days, and uses that median price to create $1 worth of STEEM in place of the SBD token.
More details on SBD can be found in the post SBD Explained.
amount of SBD you would like to convert. The amount should be in the form 0.000. This includes at least one digit to the left of the decimal (which can be zero), and three digits to the right of the decimal (which can be zero).requestid value. The main thing that matters is that it is different than any other requestid values from other in-progress conversions under your account. You may want to just start with 1.owner, the requestid value, and the amount into this URL: https://steemconnect.com/sign/convert?owner=timcliff&requestid=1234567&amount=0.000%20SBD%20SBD at the end is what comes after the 0.000 amount.)active key. (Technically your owner key or master password will work too, but it is always best to sign with the lowest authority required.)That's it!
You can check your in progress conversions using this URL: https://api.steemjs.com/get_conversion_requests?accountName=timcliff
(with your account name filled in).
The results will look something like this:
[{"id":72853,"owner":"timcliff","requestid":1234567,"amount":"0.001 SBD","conversion_date":"2018-09-01T13:47:18"}]
Your SBD that is in the process of converting will also show up in your steemit.com wallet:
After 3.5 days, your conversion should complete, and you will have your "approximately $1 USD worth of STEEM".