Advanced Hydration Needs Estimator<i class="fas fa-tint"></i> Advanced Hydration Needs Estimator<i class="fas fa-birthday-cake"></i> Age <i class="fas fa-venus-mars"></i> Gender Male Female <i class="fas fa-weight-scale"></i> Weight kg lbs <i class="fas fa-ruler-vertical"></i> Height (Optional Context) cm in Included for completeness, but not directly used in this specific calculation. <i class="fas fa-stopwatch"></i> Daily Exercise Duration mins/day Average daily moderate-to-high intensity exercise time. <i class="fas fa-globe-americas"></i> Country of Residence (for Climate Approx.) -- Select Country -- Other / Unlisted Canada United Kingdom Germany France Russia Japan South Korea