Water Tank Size Calculator
Instant · no signup neededSize your water storage tank based on your household size and how many days of backup you want to plan for.
Based on 150 liters per person per day — a realistic average for an urban Pakistani household with regular bathing, cooking, and flushing — times your backup days, plus a 20% buffer for evaporation and cleaning losses. Adjust upward for gardens, extra bathrooms, or guests.
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Frequently asked questions
150 liters per person per day — a realistic average for an urban Pakistani household with regular bathing, cooking, and flushing — plus a 20% buffer for evaporation and cleaning losses.
Yes — this is a baseline household estimate. Adjust the tank size upward if you have a garden, extra bathrooms, or regularly host guests.
More free planning tools
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