Hi @FinnifyYT, you have multiple problems with your code. I can give you hints to help, but cannot provide the full corrected code in case this is a school assignment/homework.
First of all, please use the correct type of speech marks for strings ("string" or 'string'), the ones you have provided in your code gives an error.
Secondly, the indentation for the if/else statement is wrong, anything within the if and else part of the statement should be indented at least 2 lines.
Finally, you are multiplying the wrong variable by 0.45. You should be multiplying the variable weight instead of lbs_or_kg.