Popsugar Health & Fitness Calorie Breakdowns How Many Calories Are in Wine? Here's How Many Calories Are in a Glass of Each of Your Favourite Wines 31 May 2019 by Tarah Chieffi View On One Page Photo 5 of 8 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 5 How Many Calories Are in a Glass of Merlot? A glass of merlot contains about 122 calories, and it may even help you live longer. Previous Next Start Slideshow Calorie BreakdownsBeveragesHealthy LivingWine