From time to time, it can be nice to indulge in a delicious glass of red wine in the evening or over a romantic dinner. Red wine is a great addition to a meal, but keeping track of the carbs in a glass of wine can stymie many keto enthusiasts dedicated to the lifestyle. To maintain ketosis, you might need to be more careful about how you imbibe. How many carbs are in red wine and which ones should you steer clear of?
For a quick glance at how many carbs are in a single serving of wine, here is what you need to know.
Measuring a Serving Size
First and foremost, it is important to understand that the net carbs in a glass of wine will really depend on what size glass you happen to be pouring. A real serving size of red wine is five ounces, which means that you do not want to pour to the rim of your glass. A full wine glass likely counts as closer to two servings, so be sure to measure your ounces.
What’s the Carb Count in Sweet Red Wines?
For the most part, sweet red wines are going to be off-limits if you plan to stay in ketosis. They tend to have higher sugar content, which can impact the net carbs in each glass. If you see a label that recommends a bottle as a dessert wine or a dolce wine, you should steer clear.
Varieties that claim to be sweeter, while not as common in reds as in whites, will have close to four net grams of carbs per serving. For example, about four grams of carbs is what you can expect in a red Moscato blend or a slightly sweet red wine like a zinfandel, malbec, or shiraz.   
To be on the safe side, you will want to stick with a dry red wine with a light body to it. Some wines will have as few as 3 to 3.5 grams of net carbs in a single 5-ounce glass. You might want to try some of these varieties with lower alcohol and sugar content if weight loss is your primary goal.
Carb Count in Dry Red Wines