🛠️ Exercise Hydration Calculator Exercise Hydration Calculator Find out exactly how much water you need before, during, and after your workout Imperial (lbs) Metric (kg) Your Details Weight (lbs) Workout Duration (mins) Workout Details Exercise Type Walking / light yoga Cycling / swimming Running / cardio Weight training HIIT / intense sport Endurance / marathon Environment Indoor / cool Mild outdoors Warm outdoors Hot / humid Calculate My Exercise Hydration Total Extra Water Needed — for this workout — Before — During — After Hydration Tips for Your Workout