The calculator's fl oz and gal are US volume units. They are different from mass ounces (oz) and Imperial volume units.

Original Dilution Ratio Calculator introduction image
Original promotional image; check the unit selector beside each amount field.

Is 5 US gal the water amount or the finished total?

For a hypothetical concentrate:water 1:800 instruction and 5 US gal water, concentrate is 0.00625 US gal = 0.80 US fl oz ≈ 23.66 mL. Use the material/water mode and enter 5 gal in the water field.

If the finished total must be 5 US gal, use total mode. Concentrate is 5 ÷ 801 US gal ≈ 23.63 mL; water is approximately 18903.42 mL. The two inputs differ because the total includes concentrate.

Select the units

  1. Check whether the instruction compares concentrate with water or total.
  2. Enter the concentrate-to-water ratio and choose the relevant mode.
  3. Select mL, L, fl oz or gal beside the known amount.
  4. Check the result units. Package volume alone does not specify the ratio.

In NIST's table, 1 US gal ≈ 3.785412L and 1 Imperial gal = 4.54609L. Convert Imperial inputs to mL or L first. The app's arithmetic does not guarantee cleaning performance or surface compatibility.

Dilution Ratio Calculator instructions · US and Imperial conversion guide