Diners will have to wait until the end of 2016 to find calorie labels on all chain restaurant menus.

The Food and Drug Administration says restaurants and other establishments will now have until December 1, 2016 to comply with federal menu labeling rules, a year beyond the original deadline.

FDA says it's extending the deadline after restaurants and other retailers covered by the rule said they needed more time to put the rules in place.

The rules will require restaurants and other establishments that sell prepared foods and have 20 or more locations to post the of food "clearly and conspicuously" on their menus, menu boards and displays. That includes prepared foods at grocery and and in movie theaters, among other locations.