You never need to use a TFSA calculator to figure out how much room you have to contribute.
Just go to your CRA account and you’ll see your limit for this calendar year at the bottom.
The only thing to note is that it won’t include any deposits or withdrawals you’ve already made this year, so if it says $40,000 and you’ve already contributed $5,000 this year, you’ll only have $35,000 left.
While you’re there, you’ll also be able to see your RRSP contribution room, too.