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Sweat Rate & Sodium Loss Calculator

Enter your values below (in kg, L, and hours). All results update automatically.

A = Weight pre-exercise (kg)


B = Weight post-exercise (kg)


X = Weight of food & water brought (kg)


Y = Weight of remaining food & water (kg)


P = Fluid lost via urination (L)


T = Exercise duration (hours)


Sweat Sodium Concentration (mg/L)
⬅️ ⬆️ obtained from your sweat test

C = A - B = 0 kg
Z = X - Y = 0 kg

% Body Weight Change: 0%

Total Sweat Loss: 0 L

Sweat Rate: 0 L/hr

Sodium Loss (mg/hr): 0

Total Sodium Loss (mg): 0