Daily water intake calculator
A rough starting estimate for how much water to aim for in a day, based on body weight and activity.
How it works
The estimate starts at half your body weight in ounces per day, then adds more when you are active or in hot weather. It is a general guide, not a medical recommendation — health conditions and medicines change fluid needs, so check with a professional if you are unsure.
General information only, not medical advice. If a health problem persists, please consult a qualified healthcare professional.
Go deeper
Get Hydration Hacks for Busy People on Google Play
Join the ARC team
Want an early copy of the next book in exchange for an honest review? Sign up through the form below. Reviews are never asked to be five stars — honest opinions only.
Follow along
Facebook Instagram Pinterest YouTube Facebook group: 101 Tips for Busy People