Coolant Concentration Calculator
Convert refractometer readings to coolant concentration percentage and calculate adjustments to reach target concentration.
Inputs
Brix
gal
Results
Actual Concentration
5.5%
Difference from Target-1.5%
Water to Add0 gal
Concentrate to Add0.81 gal
Current Mix Ratio18
Target Mix Ratio14
How to Use This Calculator
- Take a refractometer reading from your machine sump coolant sample.
- Enter the coolant manufacturer's refractometer factor (concentration multiplier).
- Set your target coolant concentration (%) and total sump volume (L or gal).
- Review actual concentration, deviation from target, and how much water or concentrate to add.
- Re-test with the refractometer after adjustment to confirm concentration is correct.
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