Calculator inputs
Estimate daily water intake from body weight and activity.
Enter the weight using the unit shown in the label.
Enter the time using the unit shown so the total stays consistent.
Controls rounding in the displayed result only; it does not change the underlying calculation.
How this calculator works
This calculator estimates baseline fluid needs and adds an allowance for exercise minutes.
Use this result as a planning estimate. Real lending, payroll, tax, health or construction outcomes can vary based on official rules, local costs and personal circumstances.
Formula
Worked example
80 kg with 45 minutes of exercise estimates a higher daily fluid target than baseline alone.
Frequently asked questions
Why use this calculator?
It gives a fast estimate and helps compare related scenarios before moving to more detailed planning.
Is the result exact?
No. Treat it as a practical estimate and verify important numbers with official sources or qualified professionals.