Turn an hourly rate into a fixed project quote, or check what a fixed-price project actually works out to per hour, including what happens if it runs longer than planned.
A fixed price that sounds reasonable can quietly work out to a very low hourly rate once the project runs longer than expected, which is the norm rather than the exception. Converting between hourly and fixed pricing before you commit, and checking the worst-case scenario, gives you a clearer picture of what you're actually agreeing to.