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Bottled Water vs Reusable Bottle

When does a reusable bottle pay for itself?

Enter your bottled water use and a reusable bottle's costs to see the break-even.

One Click Answers · Bottled Water vs Reusable Bottle
oneclickanswers.com/bottled-water-vs-reusable-calculator · Printed
About this tool & how to use it

What it does

Shows when a reusable bottle pays for itself compared with bottled water. Costs only.

How to use it

  1. Enter the cost of one bottled water and how many you drink per day.
  2. Enter the reusable bottle's one-time cost and any monthly filter or refill cost.
  3. Read how many months it takes to pay for itself.

One click answer

Your answer will appear here.

Fill in the form and your answer will appear here.

Everything is calculated in your browser: the prices and numbers you enter are never sent anywhere or stored. We do not know any store's prices or tax rates, and these results are arithmetic, not advice to buy.

Assumptions

  • This compares costs only. It makes no claim about health or the environment.
  • A month is counted as 365 / 12 days.

Printed from oneclickanswers.com. Results are estimates based on what was entered; see the assumptions above.

How it works

Bottled per month = cost x bottles per day x 365 / 12: $1.20 x 3 x 30.4 = $109.50.

The reusable bottle costs $25 once and $4 a month, so each month saves $105.50 and it pays for itself in about 0.24 months.

Assumptions

  • This compares costs only. It makes no claim about health or the environment.
  • A month is counted as 365 / 12 days.

Example

Input: The starting values already in the form

Result: The reusable bottle would pay for itself in about 0.2 months.

Questions

Does a reusable bottle save money?

If it costs less per month than the bottled water you replace, it pays for itself. The page shows when.

What if I use a filter?

Enter its monthly cost in the filter box.

Last reviewed 2026-10-04.

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