Free calculator

Sweat Rate Calculator

Free Sweat Rate Calculator with instant browser-based results and a clear calculation breakdown.

💧 Sweat Rate Calculator

Calculate your fluid loss during exercise to optimize hydration

kilograms (kg)
kilograms (kg)
milliliters (mL)
minutes

Your Sweat Rate

How This is Calculated: Sweat Rate = [(Pre-weight - Post-weight) + Fluid Intake] / Duration

This calculation determines your fluid loss through sweat by measuring the difference in body weight before and after exercise, accounting for any fluids consumed during the activity. Use this information to develop a personalized hydration strategy for future workouts. Individual sweat rates vary based on intensity, temperature, humidity, and fitness level.
Want to understand the calculation?
See examples, formula notes and limitations.
Read the guide