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Windshield Washer Fluid Mix Ratio Calculator

Enter a total volume and a concentrate-to-water ratio to calculate how much of each to mix.

How to use this tool

  1. 1Enter your total desired volume.
  2. 2Enter the concentrate and water parts of your ratio.
  3. 3See the concentrate and water amounts to mix.

Frequently asked questions

What ratio should I use?+

Follow the mix ratio printed on your specific washer fluid concentrate's label — it's calibrated to that product's freeze protection for your climate.

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