The easiest way to calculate hourly rate from salary is to take your annual salary figure and divide it by the number of agreed hours you will work in a year. For example, imagine you earn €42,500 a year and are contracted to work 35 hours a week, over 52 weeks—or 1,820 hours. The sum for your hourly rate would be: €42,500 ÷ 1,820 = €23.35.