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Hydration Calculator:
Stay Hydrated for Peak Performance

Stay optimally hydrated with our Hydration Calculator. Get personalized water intake recommendations based on your activity, climate, and workout intensity. Try it now!

Climate Type

Daily Activity Level

Sweat Rate

Display Units

Hydration Calculator

Health Resources and Tools

Optimize your hydration with our science-backed Hydration Calculator. It gives you accurate daily water intake targets based on your activity level, climate, and training intensity—so you stay fueled and performing at your best.

Proper hydration isn’t just about drinking more—it’s about balance. Learn how fluid intake, electrolyte levels, and sweat loss affect your body. This guide breaks it all down, helping you avoid common mistakes and stay in control of your performance, recovery, and overall health. Hydrate smarter, train harder, and feel the difference in every session.

1

The Science of Hydration

Proper hydration is essential for energy, recovery, and overall performance. Learn how water intake affects your body, signs of dehydration, and how to stay optimally hydrated throughout the day.

2

Optimizing Your Fluid Intake

Not drinking enough—or too much—can impact your fitness goals. Explore expert strategies on tailoring water intake to your activity level, adjusting for climate, and maintaining electrolyte balance for peak performance.

Try Our Other Free Calculators

TDEE

Factor in your daily activity level to determine how much water you need to stay hydrated and recover faster.

TDEE calculator

Sleep Quality

Optimize sleep quality by staying hydrated, which supports hormone balance, recovery, and muscle function.

sleep quality score calculator

Electrolyte (Coming Soon)

Balance sodium, potassium, and magnesium for hydration efficiency during workouts or hot climate training sessions.

Electrolyte calculator
I never drank enough water during training, but this calculator showed me exactly how much I need.

Leo

Staying hydrated used to be hit or miss. Now I follow this tool daily and feel way more energized throughout workouts.

Ava

This calculator gave me a clear hydration target that actually fits my routine. No more guesswork.

Finn

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