Estimate an adjustable daily total-water reference range.
Preparing calculator…
The estimate includes water from food and drinks. It is not an instruction to drink that volume as plain water and is not a medical conclusion.
Not a diagnosisFor general health education and estimation only. It does not diagnose a condition and is not treatment, medication, diet or training advice.
weight (kg) × 30–35 mLGenerally healthy adults in temperate conditions, as a daily total-water reference.
Fluid restriction, heart, kidney or liver disease, pregnancy, fever, diarrhoea, heat and prolonged exercise require individual guidance.
Input accuracy, measurement technique, rounding and individual variation all affect the result. Internal precision is retained and only displayed values are rounded.
Urgent care may be needed for confusion, severe dehydration, fainting or a major unexplained change in urination.