We already have a freelance hourly rate calculator to help you set your hourly rates to reach your income goal. This is a different kind of rate calculator. It's designed to let you break down everything involved in a project to find out what you're really earning on an hourly basis -- not just billable time but also factoring in related marketing, admin work, client communication, etc. Play with it and see how much you're really earning per hour.
Minutes spent brainstorming / planning / outlining
Minutes spent researching / interviewing / note-taking
Minutes spent writing
Minutes spent editing / proofreading
Minutes spent on marketing to get the gig (query writing / pitching /
cold call / etc.).
Minutes spent on additional client communication (sending and reading
emails / phone calls / IM chats / etc.)
Hours spent per project