💰 Cost-Benefit Analyzer

See your exact 5-year savings vs. bottled water — with a downloadable CSV report.

Family Size

Daily Litres per Person

Bottled Water Cost (৳/litre)

Purifier Purchase Price (৳)

Electricity Rate (৳/kWh)

Purifier Type

Calculating 5-year savings...

5-Year Total Saving

৳0

Break-even (months)

Monthly saving (৳)

Bottles saved/year

CO₂ saved/year (kg)

Period	Bottled Cost (৳)	Purifier Cost (৳)	Net Saving (৳)