Have you had too much to drink?

There's an app for that.

The Colorado Department of Transportation has created a free iPhone program that lets users calculate their blood-alcohol level.

By entering basic information — your weight, sex, number of hours you've been drinking and the type and amount of alcoholic beverages you've consumed — you'll get an idea whether you've overdone it.

In addition to getting an estimated blood-alcohol content, users see messages such as, "No hangover expected," and "You're buzzed."

If they are considered over the legal blood-alcohol level for driving under the influence — 0.08 percent — the app displays an apt warning: "Don't even think about it."

"People just need to be aware of how alcohol affects them," said Heather Halpape, a spokeswoman for CDOT's safety programs. "This is just a tool to give them a little idea of where they are."

For more of this Denver Post story: http://www.denverpost.com/ci_13904487