Tap Water Savings Calculator

Find money and plastic saved by skipping bottled water.

Bottles per day

Cost per bottle ($)

Plastic per bottle

Yearly cost ($) 730

Plastic per year 7.3

Bottles per year 730

Formula: yearly cost = bottles/day × 365 × cost

Step-by-step with your numbers:

1. Values used:

2. Bottles per day = 2

3. Cost per bottle = 1 $

4. Plastic per bottle = 10

6. Yearly cost = 730$

7. Plastic per year = 7.3

8. Bottles per year = 730

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See what bottled water costs you — and the planet — each year.

The math behind it

yearly bottles = per day × 365; cost = bottles × price; plastic = bottles × grams ÷ 1000.

2/day at $1 → $730/year, 7.3 kg plastic.

Filter?

A reusable bottle plus a filter pays for itself fast.