Exercise Science Tool

SWEAT
RATE

Calculate fluid loss and personalized hydration targets based on your pre and post-exercise weight.

Pre-Exercise Weight
kg
Post-Exercise Weight
kg
Exercise Duration
min
Fluid Consumed
mL

Please fill in pre/post weight and duration.

Hydration Status
Sweat Rate
mL / hour
Total Fluid Loss
mL
% Dehydration
body weight lost
Target Intake
mL / hour (80%)
Dehydration Scale
0%1%2%3%4%+
Formula: Sweat Rate = (Pre − Post Weight + Fluid In) ÷ Duration × 60
Target intake set at 80% sweat rate to prevent overhydration.
Dehydration >2% body weight impairs aerobic performance.