Retirement tax questions

I'm having a difficult time with how to enter a conversion. I have the same scenario (moved money from my ex-employer 401K into my roth IRA). I understand this is taxable. Where can I enter this amount to indicate that I put it in the roth IRA? When I try and include it in the amount for my Roth contribution it gives me an error saying that the contribution is higher than my wages so I'll need to pay a fee.