How Do I Calculate My Sweat Rate?

/How Do I Calculate My Sweat Rate?

To calculate your sweat loss per hour:

((Pre-Weight) – (Post-Weight) + (Fluids Consumed)) ÷ (Duration of Workout)


((73 kg) – (72 kg) + (0.5 liters)) ÷ (1 hour) = 1.5 liters per hour = Sweat Rate

Weights should be in kilograms, volume in liters, time in hours.

Since your sweat rate will vary based on conditions and acclimation, we recommend that endurance athletes, and other athletes that train & compete in various conditions, keep a training log with the following information:

  1. Pre-weight
  2. Workout Duration
  3. Post-weight
  4. Amount of fluids consumed
  5. Workout Conditions (Temperature & Humidity)

This will allow us to determine your sweat rate for a given race condition.

Buy an Individual Sweat Test to determine your body’s specific hydration & electrolyte needs, and take your performance to the next LEVEL.