ConvertUnits.com provides a tool you can use to calculate the equivalent annual salary based on your hourly wage. 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 daily, weekly, and monthly earnings. 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: 40 dollars an hour is how much a year
Want the reverse calculation? You can convert annual salary to hourly wage instead.