Formula
Estimate a 30 ml/kg baseline and add reference allowances for exercise and hot conditions.
Health & Body · Tool 609 of 200,000
Daily Water Intake Calculator
Enter your values for a transparent, reproducible daily water intake calculator, with the formula and scope shown.
LiveScenario estimateLocal calculationUS · USD
Your inputs
Enter real numbers
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Live result
Daily water guideline
0.72 gal
This result updates automatically when you change an input.
- Weight-based baseline
- 1,950 ml
- Exercise allowance
- 525 ml
- Heat allowance
- 250 ml
Reproducible, not guessed
How was this calculated?
Scope
Use values that match your situation and location. Verify rule-based, contractual, financial or health decisions against an authoritative local source.
Model context
localeen-UScountryUScurrencyUSDtimezoneAmerica/New_Yorkunit_systemimperialrules_versionus-2026.08source_languageen-US
Results are for first-pass estimates and scenario comparison. Important tax, employment, health and investment decisions should be verified against local official guidance or a qualified professional.