Sweat Rate Calculator
Estimate your sweat rate from changes in body weight, fluid consumed, urine loss and training duration.
Enter your pre- and post-exercise weights, fluid intake, urine loss and session duration to estimate your sweat rate.
How the Sweat Rate Calculator Works
FitnessScopes estimates sweat loss using the change in body mass during the session, adjusted for fluid consumed and urine loss.
Body-mass loss + fluid consumed − urine loss = estimated sweat loss.
The estimated sweat loss is then divided by session duration to calculate an hourly sweat rate.
Why Sweat Rate Changes
Sweat rate can change substantially between sessions. Factors such as temperature, humidity, exercise intensity, clothing, fitness, acclimatisation, body size and individual physiology can all affect fluid loss. A result from one training session should therefore be treated as an estimate for those specific conditions rather than a fixed personal number.