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Water Consumption Calculator
Understand your household water usage and bill.
Usage = people × liters per person per day × days. The result is given in liters, m³ and an optional cost using your water tariff.
How it works
Usage = people × liters per person per day × days. The result is given in liters, m³ and an optional cost using your water tariff.
Worked example
3 people × 150 L/day × 30 days = 13,500 L = 13.5 m³ per month.
Recommendations
- An average person uses 140–160 L per day
- Check your meter monthly to spot leaks
- A dripping tap wastes ~5,000 L per year
Tips & advice
- Install low-flow shower heads and aerators
- Use the dishwasher only when full
- Collect rainwater for the garden
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Use the calculatorInvoice Generator FAQs
Yes, all 20 home calculators are 100% free, private and run entirely in your browser. No account needed.
They use standard industry formulas. Always round up for materials and confirm with a professional for structural work.
The calculators use metric units (meters, liters, m³). Convert imperial measurements beforehand if needed.
No. Calculations happen instantly in your browser and nothing is sent to any server.
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