4 min · calculator

Water Intake Calculator

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Step 1 of 2: Hydration context

Current body weight

Use your best estimate.

Moderate to high intensity exercise per day

Average duration of sweat-inducing or physical exercise per day.

None (0 min)1–30 min31–60 min61–90 min90+ min

How much do you sweat most days?

Choose the option that best matches most days.

Very littleLightModerateHeavy

What climate are you usually in?

Choose the option that best matches most days.

CoolMildWarmHot or humid

How often do caffeine or alcohol affect hydration?

Choose the option that best matches most days.

RarelySometimesOftenMost days

This tool is for general wellness education only. It does not diagnose conditions or replace medical advice.