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Help Centerβ€ΊPressure Washingβ€ΊMix Ratio Calculator

Mix Ratio Calculator

Calculate exact SH, surfactant, and water amounts by surface type, soil level, and sq ft β€” then save to batch log.

How the Calculator Works

The Mix Ratio Calculator takes three inputs and outputs the exact amounts of each chemical needed for a safe, effective mix:

  1. Go to Pressure Washing β†’ Calculator
  2. Select the Surface Type (house wash, roof, driveway, patio, wood deck, etc.)
  3. Select Soil Level (Light, Medium, Heavy)
  4. Enter the square footage of the area
  5. Click Calculate

The calculator displays recommended amounts for SH, surfactant, and water in gallons.

SH Strength Adjustment

If you've set up a SH chemical with an original strength and purchase date, the calculator automatically adjusts the SH amount based on the estimated current strength. Weaker SH means more volume needed to hit the target concentration β€” the calculator handles this math for you.

Saving a Batch

After reviewing your mix, click Save Batch to log it. Enter the job or location name, confirm the amounts, and click Confirm. The batch is added to your Batch Log with a timestamp.

Batch Log & Inventory Deduction

Every saved batch automatically deducts the chemical amounts from your inventory. No manual entry needed. Review the batch log under Chemicals β†’ Batch Log to see the full history of mixes with job associations.

PW calculator surface type selector Calculator results with Save Batch button
calculatormix ratiobatchSHsurfactantpressure washing