Enter your details
L/day
persons
Calculation method
Per-person water use = total daily water use ÷ number of people.
Your result
Daily water per person
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Annual per person
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Household annual
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People
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Monthly per person
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This is a simple allocation calculation and does not distinguish household, commercial or outdoor sources.
How to use this calculator
What to enter
Enter or select the following as requested: Total water use; People. Follow the units, valid ranges, examples, and options displayed beside each field.
What the result means
The environmental or resource result is an estimate based on the activity quantities and factors entered or built into the tool. Emission factors, regional energy mixes, and local conditions can change the result; check the assumptions and reporting period.
When to use it
Use this to estimate resource use or compare scenarios. For formal reporting, use current region- and method-specific factors and document the assumptions.