We have developed this hourly rate calculator to give you a guide based on your costs, number of billable hours and desired profit. It is a simple tool for you to play with.
Remember your hourly rate should always take into account factors like market demand, industry standards, skill level and experience - things that unfortunately we can't put into a calculator!
Use these calculations as a guide and then modify to suit your circumstance and conditions.
It will take you about 5-20 minutes to complete depending on how
much attention you give each calculation.
http://www.freelanceswitch.com/rates/