IRA conversion to Roth

I am totally confused on how I enter this in Turbo Tax.  In 2019 I rolled my federal Thrift Savings balance into a traditional IRA.  At the end of the 2019 I converted $25,000 of that IRA into a Roth.  I have a 1099R showing that amount but can't figure out how to enter it so I don't have a penalty at the end for an over contribution to the Roth.  It shows up in the income column so I will be charged the taxes on it but how do I indicate it is a conversion and not a contribution.