Who Runs This Site
liquidintakecalculator.com is owned and operated by Evavel Private Limited. We build free, privacy-first calculators for everyday health, money and measurement questions, and run a small family of focused calculator sites, each built around one job.
The formulas on this site come from published, citable sources, and we update a page when the guidance it relies on changes. If you spot a mistake, email care@calculations.one and we will check it.
Our Mission
Most hydration advice online repeats the same generic rule regardless of your body size, activity level, or climate. LiquidIntakeCalculator.com personalises your daily fluid target and lets you log every drink through the day — including non-water beverages — with an honest hydration-value adjustment.
Our Methodology
Our general guideline formula (weight × 33ml, plus activity, climate, and condition adjustments) reflects widely used hydration guidance. We also show the Holliday-Segar formula, a clinical reference method, for comparison and transparency.
Important: we are an informational tool, not a medical provider. Read our full Disclaimer before making health decisions based on any calculator result.
Editorial Standards
Our content is written to be genuinely useful, not padded for search engines — clear formulas, honest limitations, and no exaggerated health claims.
What We're Building Next
We're exploring sweat-rate-based hydration planning for athletes and a persistent log (with optional local storage), continuing the same standard: transparent math, no dark patterns, free forever.
Free, Always
No paywalls, no account required, no hidden premium tier.
Formula-Transparent
We show you exactly how every number is calculated.
Privacy-First
Your inputs never leave your browser or touch our servers.