How much wine is 1 glass? Understanding Standard Pours
                                
                                
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                                    3 min read                                
                            
                                According to the National Institute on Alcohol Abuse and Alcoholism, a standard drink in the U.S. is a 5-ounce glass of wine. However, this amount is a guideline, and the real-world answer to how much wine is 1 glass varies significantly based on the wine's alcohol content, the occasion, and the glass itself.