Planning calculator

Water tank and autonomy sizing

Estimate daily fresh-water use, tank autonomy, water payload and grey-water capacity from editable usage assumptions.

Fresh-water tank capacity (L)PeopleDrinking water (L/person/day)Cooking water (L/person/day)Dishwashing water (L/person/day)Shower time (min/person/day)Shower flow (L/min)Toilet uses (per person/day)Water per toilet use (L)Other use (L/day)Planning reserveGrey-water tank capacity (L)

Water estimate

Daily water use

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Current tank autonomy

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Required tank with reserve

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Water payload

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Grey-water estimate: — —

Safety note: Actual consumption changes with weather, campsite access, water restrictions, shower flow, toilet type and personal habits. Water weighs approximately 1 kg per litre; include the full tank in payload and axle-load calculations.

Safety and limitations

This tool provides an early planning estimate only; it is not a permit, certification, safety approval or final engineering design.
Use measured inputs and the exact manufacturer datasheets for the equipment, materials, installation method and operating environment.
Check local building, marine, electrical, gas, water, fire and environmental requirements before construction or installation.
Have a qualified professional verify the final design, protection devices, structure, ventilation, drainage, emergency systems and commissioning tests.
This result does not model every site condition, structural detail, weather event, emergency condition or code requirement.

If an input is unknown or the result is close to a limit, stop and obtain the missing documentation or professional verification.