Reusable Water Bottle Savings Calculator
See how much you save by refilling a reusable bottle instead of buying bottled water.
About this calculator
Switching from bottled water to a refillable bottle is often framed as an environmental choice, but it's also a straightforward financial one, since bottled water usually costs far more per liter than tap or filtered water. This calculator takes how many bottles you'd otherwise buy per day, the price per bottle, and a number of days, then multiplies the three together to show total gross savings from avoiding those purchases over that period. Tracking this manually means remembering how many bottles you actually skip and multiplying across weeks or months, something few people bother to do, so the true savings usually go unnoticed. Running the numbers here, especially over a full year (365 days), often reveals a surprisingly large figure that makes the case for a reusable bottle more concrete than a general appeal to sustainability.
Worked example
2 bottles/day at $1.50, one year
Result: $1,095.00
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