Free, runs entirely in your browser — no sign-up, no file upload to a server.
What does Water Intake Calculator do?
It estimates a daily water intake target based on your body weight and activity level.
How accurate is the result?
It uses standard, widely published formulas, but it's a general estimate, not a medical assessment — for guidance specific to your health, consult a doctor or qualified professional.
Is my data sent anywhere?
Everything runs in your browser — nothing you type or paste is sent to a server.
How do I report a problem or request a feature for this tool?
Use the Contact / Feedback page — select "Water Intake Calculator" as the related tool so we know exactly which tool you mean, then describe the bug or the feature you'd like to see.