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Electrolyte Loss Calculator
Estimate how much Sodium, Potassium, and Magnesium you lose during intense sweating.
1 Profile
Sweat Loss Per Hour
Sodium (Est.)
Major electrolyte lost in sweat
600 - 1500 mg
Potassium (Est.)
Intracellular balance
225 - 375 mg
Fluid Loss
Estimated per hour of activity
0.8 - 1.8 L
Popular Variations (3)
Sweat Composition
Sweat isn't just water. The primary electrolyte lost is Sodium.- $&
Rehydration Strategy
Water alone isn't enough for long sessions (>90 min). You must replace sodium to maintain plasma volume and avoid hyponatremia.Explore More Tools
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