Label Dilution Guide

Labels use different mixing formats: 1:32, 64:1, or even oz per gallon. This guide explains how to interpret them and convert them into exact concentrate + water amounts.

How to read a dilution ratio on a label

  1. Find the mixing instruction: Look for 1:32, 64:1, “oz per gallon,” or “mL per liter.”
  2. Confirm the order: Determine whether it’s concentrate:water (1:X) or water:concentrate (X:1).
  3. Choose container size: Select your sprayer or bottle size (gal, fl oz, L, or mL).
  4. Convert to real amounts: Use the helper below to get concentrate and water amounts.
  5. Mix safely: Follow the label for PPE, mixing order, and approved uses. This site provides dilution math only.

Quick answer

1:32 usually means 1 part concentrate to 32 parts water. 64:1 often means the reverse order (water:concentrate). If a label says oz per gallon, that’s the concentrate amount per final gallon of spray mix (labels vary—follow the wording).

Fastest option: Spray Mix Calculator · Label says oz/gal? Oz Per Gallon Calculator · Want a table? Mixing Chart.

Jump to: Common label formats · Interactive helper · Recommended calculators · FAQ

Common label formats (what they mean)

1:X (Concentrate : Water)

A ratio like 1:32 usually means 1 part concentrate mixed with 32 parts water. The concentrate fraction of the final mix is 1 ÷ (1 + 32).

X:1 (Water : Concentrate)

Some labels reverse the order (for example 64:1). That often means 64 parts water to 1 part concentrate. On this site, you can choose the ratio format that matches the label wording.

Ounces per gallon

If a label says something like “4 fl oz per gallon”, you already have the concentrate amount for a 1 gallon mix. For other tank sizes (2 gal, 4 gal, 5 gal), multiply by gallons. Or use our calculators to avoid mistakes.

Helpful tools for accurate mixing: measuring syringe · graduated cylinder · chemical-resistant gloves

Mixing accuracy depends on your tools. See recommended measuring and calibration tools used with common spray labels.

Interactive helper

Convert a label ratio to real amounts

Pick a common container size and ratio. You’ll get concentrate (fl oz + mL + tbsp/tsp) and water to fill the rest.

FAQ

What does a 1:32 dilution ratio mean on a label?

A 1:32 ratio usually means 1 part concentrate mixed with 32 parts water. The concentrate fraction of the final mix is 1 ÷ (1 + 32). Use the helper above to calculate exact amounts for any container size.

Is 64:1 the same as 1:64?

Not always. 1:64 commonly means concentrate:water. 64:1 is often written as water:concentrate. Always match the order to the label wording.

How do I convert a ratio to ounces per gallon?

For 1:X, compute 1 ÷ (1 + X) then multiply by 128 fl oz (1 gallon). Or use our Ratio to Ounces Calculator to avoid mistakes.

Should I add concentrate first or water first?

Many users add some water first, then add concentrate, then top off with water and mix. Always follow the product label instructions for mixing order and agitation.

Does this guide replace pesticide label instructions?

No. This page provides dilution math and unit conversions only. Always follow the product label for approved uses, rates, timing, and safety guidance.