Automotive Calculators
Windshield Washer Fluid Mix Ratio Calculator
Enter a total volume and a concentrate-to-water ratio to calculate how much of each to mix.
Concentrate
0.50 gal
Water
0.50 gal
Splits a total volume by parts (like a 1:1 or 2:1 concentrate-to-water ratio) — follow your specific product's label for the ratio that matches your climate's freeze protection needs.
How to use this tool
- 1Enter your total desired volume.
- 2Enter the concentrate and water parts of your ratio.
- 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.