ConvertUnits.com provides a tool you can use to calculate the equivalent hourly wage based on your annual salary. You can factor in paid vacation time and holidays to figure out the total number of working days in a year. The salary calculator will also give you information on your weekly income and monthly totals. Remember that a full salary with benefits can include health insurance and retirement benefits that add more value to your total annual salary compared to similar hourly rates. You may also want to factor in overtime pay and the effects of any income taxes on your take home pay.
Here's an example: 138,000 a year is how much an hour
Want the reverse calculation? You can convert hourly wage to annual salary instead.