Note: if you do not have earned income (w2, etc), you can’t contribute to your Roth or IRA, as others have mentioned. BUT, if your spouse has earned income, you can contribute to your Roth or IRA, based on the ‘spousal IRA’ rule. Search for that term online to get further details.
Conversions must be made by Dec 31st. Contributions by tax deadline, typically April 15.
