How many liters are in 9 glasses of water? A Comprehensive Guide
                                
                                
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                                    2 min read                                
                            
                                The human body is composed of approximately 60% water, yet the simple act of tracking daily fluid intake is often complicated by vague measurements like "a glass". Determining exactly how many liters are in 9 glasses of water is not a single, fixed number, but rather a calculation dependent on the size of the glass used.