WaterIntakeCalculator
1036 calculators

Human Calculators

Daily water intake calculators for adults — men, women, elderly, weight-based, and weather-based.

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Top picks

Most popular in Human Calculators

#1 pick

Adult Daily Water Intake

Personalized daily water target for healthy adults, adjusted for weight, activity, and climate.

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#2 pick

Elderly Water Intake (65+)

Daily hydration target for older adults, with a safe minimum floor and climate adjustments.

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#3 pick

Water Intake for Weight Loss

Higher-end daily target with pre-meal water boost that supports satiety and weight loss.

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Page 25 of 87 · 1033 total

Water Intake — Gluten Free Diet

Hydration target while following the gluten free diet.

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Water Intake — Dairy Free Diet

Hydration target while following the dairy free diet.

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Water Intake — Low Fodmap Diet

Hydration target while following the low fodmap diet.

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Water Intake — Aip Diet

Hydration target while following the aip diet.

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Water Intake — Alkaline Diet

Hydration target while following the alkaline diet.

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Water Intake — Anti Inflammatory Diet

Hydration target while following the anti inflammatory diet.

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Water Intake — Volumetrics Diet

Hydration target while following the volumetrics diet.

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Water Intake — Macrobiotic Diet

Hydration target while following the macrobiotic diet.

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Water Intake on Metformin

Daily fluid target when taking metformin — side-effect adjusted.

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Water Intake on Insulin

Daily fluid target when taking insulin — side-effect adjusted.

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Water Intake on Levothyroxine

Daily fluid target when taking levothyroxine — side-effect adjusted.

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Water Intake on Lisinopril

Daily fluid target when taking lisinopril — side-effect adjusted.

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How it works

Simple, accurate, personalized

STEP 1

Pick your calculator

Choose the one that matches your situation from the grid above.

STEP 2

Enter a few details

Weight, activity, climate, species — takes under 30 seconds.

STEP 3

Get your target

A research-backed daily target plus an hourly schedule.

Learn the science behind human calculators

Read our in-depth guides for research-backed context on every calculator here.

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