1. To convert from 100 gals. to 1 gal., move the decimal point 2 places to the left.
   
   Example: Say the label calls for 8 oz. per 100 gals. Convert the 8 oz. to .08 for 1 gal.
   
   
2. Be sure to use the same unit of measure when calculating proportional equivalents.
   
   Example: If it takes 2 qts. of water to spray 1000 sq. ft. and you want to know how many sq. ft. a full 3 gal. sprayer will cover, you must first convert the gallons to an equivalent in the same unit of measure, i.e. quarts. There are 4 qts. in 1 gal., so 3 (gals.) x 4 (qts.) = 12. The sprayer has 12 qts. capacity. Now you can calculate the coverage. If 2 qts. cover 1000 sq. ft., then 12 qts. will cover 6000 sq. ft. (Volume capacity divided by known volume, then times known area.)

Example: Say the label calls for 4 oz./acre and your sprayer covers 8000 sq. ft. How much chemical do you put in your sprayer?

First, convert sq. ft. to acres. Each 1000 sq. ft. is .023 of an acre. So, 8 (1000's sq. ft.) x .023 = .184 A. Next, multiply times the usage rate: .184 (A.) x 4 (oz. rate) = .736 oz. Convert to teaspoons for easier measuring by multiplying times 6 (since there are 6 tsp. in an ounce): .736 x 6 = 4.4 tsp. You would load just under 4-1/2 tsp. of the chemical in your sprayer.

4.  These Quick Reference Tables contain smaller-sized equivalents, as for backpack sprayers, when the label gives the chemical usage rate per 100 gals. of water.

3.  Use the Conversion Table below as needed. Many chemical products are labeled for usage rates by the acre or per 100 gallons for large applications. To convert these to a rate for smaller areas, use the following equivalents. Read across to find equivalent units of measure on each line. Example: 1 gal. (first line) is the same as 4 qts. or 8 pts. or 768 tsp. One Tbsp. (last line) equals .5 oz. or 3 tsp.


Water	Amt. of LIQUID Chemical to use
100 gals.	4 oz.	8 oz.	16 oz./1 pt.
5 gals.	1-1/4 tsp.	2-1/2 tsp.	5 tsp.
3 gals.	3/4 tsp.	1-1/2 tsp.	1 T.
1 gal.	1/4 tsp.	1/2 tsp.	1 tsp.

For other volumes or dilutions, amounts can be doubled, halved, or added together in combinations.

Example: If the label specifies that 8 oz. of a liquid pesticide are to be added per 100 gals. of water, then 1/2 tsp. of the pesticide should be added per 1 gallon. For a 4 gallon sprayer, add the 1 gal. plus the 3 gal. amount: 1/2 tsp. + 1-1/2 tsp. = 2 tsp. pesticide would be loaded into the sprayer.

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