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Cleaning chemical dilution calculator and printable chart
Enter the ratio printed on a concentrate’s label and the container you are filling, and this cleaning chemical dilution calculator shows how much concentrate goes in, in fluid ounces and milliliters, with water making up the rest. A printable chart puts the common ratios on one sheet for every janitor closet in your buildings.
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Printable template
Mix by the label, not by eye
A concentrate is made to be used at the strength its manufacturer prints on the label. Measuring every time keeps each bottle and bucket the same from one shift to the next, and makes a case of product last as long as it was bought to last. Pick a ratio, choose a spray bottle, a gallon jug, a 2.5 gallon container or a 5 gallon bucket, or type in a custom size, and the amounts appear at once.
Always follow the product label and SDS, and wear the PPE the label lists. The ratios on the quick-pick buttons are examples of what labels print, not a recommendation for any product.
How the dilution math works
A ratio of 1 : 64 means one part concentrate to 64 parts water, 65 parts in all. To fill a container, divide its size by the total parts: a 128 fl oz gallon divided by 65 gives about 1.97 fl oz of concentrate, and the remaining 126 fl oz is water. The calculator reads every ratio this way, as parts of water to one part concentrate.
Some labels give ounces per gallon instead of a ratio. Switch the calculator to ounces per gallon, enter the label figure, and it scales that amount to the container you chose. Two ounces per gallon, for example, works out to 1 : 63. Every result shows fluid ounces and milliliters with a kitchen-measure equivalent beside them, so the amount matches whichever cup, pump or measuring jug sits in the closet.
Ratios you will see on labels
The quick picks cover five common label ratios: 1 : 16, 1 : 32, 1 : 64, 1 : 128 and 1 : 256. A lower second number means a stronger mix. At 1 : 16 a 32 oz spray bottle takes about 1.88 fl oz of concentrate; at 1 : 256 the same bottle takes about 0.12 fl oz. When a label lists more than one ratio for different jobs, pick the one for the task in front of you and enter it here.
Mixing mistakes the chart prevents
- The capful guess: a cap or a quick splash from the jug is rarely the same amount twice. A cup or pump set to the chart figure is.
- Topping off with water: adding plain water to a half-empty bottle thins what is left. Empty it and mix a fresh bottle.
- The wrong batch size: a mop bucket filled to its 3 gallon line is not a 5 gallon batch. Choose Custom size and enter the volume you actually fill.
- Reading the ratio backwards: 1 : 64 is one part concentrate to 64 parts water, not 64 parts concentrate.
A chart for every custodial closet
The chart under the calculator lays out each quick-pick ratio against each container, and its Print chart button sends only that table to your printer. For a sheet made for the wall, download the dilution chart at the top of this page: the same figures in a printable layout, with a short pre-mix check and blank rows for the products stocked in that closet.
Fill in the product rows on the day you post it: each concentrate’s name as its label shows it, the ratio printed on that label, the container your team fills and the amount from the chart. A relief cleaner on a Saturday night then reads one line and mixes, with no guesswork and no call to a supervisor. Reprint the sheet whenever a product or a container size changes.
Post one beside the sink or dispensing station in each custodial closet, and the night crew, a day porter and a fill-in cleaner all mix to the same strength. Keep it next to the SDS binder, so the label ratio and the safety data sheet live in one place.
One mixing standard across every property
For a team running several buildings, a shared chart pays off fast: one sheet, one set of ratios and the same strength in a clinic suite in one city and a warehouse office in another. When a product changes, update the product rows and reprint for each closet on the same day.
Rather hand the closet and the nightly routine to one partner? Continental’s janitorial services run every property on one written scope, regionally or nationwide. Restroom paper, soap and liners come through our janitorial supplies program, disinfection and sanitizing covers the high-touch work, and our eco-friendly cleaning page shows the product choices for buildings that want them.
A few useful answers
Common questions
How much concentrate goes in a gallon at 1:64?
About 1.97 fluid ounces, or roughly 58 ml. Fill the rest of the gallon, about 126 fluid ounces, with water. Choose 1 : 64 and the 1 gallon container above to see the same figures with a kitchen-measure equivalent.
What does a 1:32 dilution ratio mean?
One part concentrate to 32 parts water, 33 parts in all. In a 32 oz spray bottle that comes to about 0.97 fl oz of concentrate, just under an ounce, with water filling the rest.
Does the calculator work for any cleaning concentrate?
It works for every concentrate whose label gives a ratio or an ounces-per-gallon figure. Enter that product’s own label number, read its SDS and wear the PPE the label lists.
Is there a printable dilution chart?
Yes. Download it at the top of this page for a wall-ready chart of five common ratios across four container sizes, with a pre-mix check and blank rows for the products in that closet. The Print chart button under the calculator prints the on-screen table as well.
What if my container is not on the list?
Pick Custom size and enter the volume you actually fill, in fluid ounces, milliliters, gallons or liters. The concentrate and water amounts follow that size.
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