Coffee Brewing Ratio Chart
Standard Brewing Ratio
Cups of  COFFEE TO BE USED  WATER TO BE USED  

BY WEIGHT  BY MEASURE  
Ounces  Grams  Tea Spoons  Table Spoons  Cups  Fluid Ounces  Cups 
Pints  Quarts  1/2 Gal  CCs (milliliters)  Liters  
1  0.38  10.6  6  2  1/8  6  3/4  3/8  3/16  3/32  177  0.18  
2  0.75  21.3  12  4  1/4  12  1 1/2  3/4  3/8  3/16  355  0.35  
3  1.13  31.9  18  6  3/8  18  2 1/4  1 1/8  9/16  9/32  532  0.53  
4  1.50  42.5  24  8  1/2  24  3  1 1/2  3/4  3/8  710  0.71  
5  1.88  53.2  30  10  5/8  30  3 3/4  1 7/8  15/16  15/32  887  0.89  
6  2.25  63.8  36  12  3/4  36  4 1/2  2 1/4  1 1/8  9/16  1065  1.06  
7  2.63  74.4  42  14  7/8  42  5 1/4  2 5/8  1 5/16  21/32  1242  1.24  
8  3.00  85.1  48  16  1  48  6  3  1 1/2  3/4  1420  1.42  
9  3.38  95.7  54  18  1 1/8  54  6 3/4  3 3/8  1 11/16  27/32  1597  1.60  
10  3.75  106.3  60  20  1 1/4  60  7 1/2  3 3/4  1 7/8  15/16  1775  1.77  
11  4.13  116.9  66  22  1 3/8  66  8 1/4  4 1/8  2 1/16  1 1/32  1952  1.95  
12  4.50  127.6  72  24  1 1/2  72  9  4 1/2  2 1/4  1 1/8  2130  2.13  
To determine the amount of water to be used with fractional amounts of coffee, multiply the weight of the coffee by the following factors: 16 (0.0625 is the inverse factor) to get fluid ounces of water: 16.6945 (0.0599 is the inverse factor) for grams to get CCs of water. For example: if you have 1.2 ounces of coffee (by weight), you would multiply 1.2 times 16.0 to get 19.2 fluid ounces of water needed. If you’re using the metric system, 92.6 grams of coffee would require 1562 CCs (1.56 liters) of water. Use the inverse factor to determine the amount of coffee to use with an unlisted amount of water. In other words, you multiply the inverse factor times the amount of water to determine the weight of the coffee to be used. It is important to know that measuring by volume is not precise due to the fact that different coffees can have different densities. Measuring by weight is the only way to be precise.

Volume Conversions  
To convert Fluid Ounces to:  multiply # of FL OZ by:  Inverse factors  To convert CCs to:  multiply # of CCs by:  Inverse factors  
Teaspoons  6  0.1667  Teaspoons  20.284  0.0493  
Tablespoons  2  0.5  Tablespoons  6.7613  0.1479  
Fluid Ounces  1  1  Fluid Ounces  3.3807  0.2958  
1/8 Cups  1  1  1/8 Cups  3.3807  0.2958  
1/4 Cups  0.5  2  1/4 Cups  1.6903  0.5916  
1/3 Cups  0.375  2.6667  1/3 Cups  1.2678  0.7888  
1/2 Cups  0.25  4  1/2 Cups  0.8452  1.1832  
2/3 Cups  0.1875  5.3333  2/3 Cups  0.6339  1.5776  
3/4 Cups  0.1667  6  3/4 Cups  0.5634  1.7748  
Cups  0.125  8  Cups  0.4226  2.3664  
Pints  0.0625  16  Pints  0.2113  4.7328  
Quarts  0.0313  32  Quarts  0.1056  9.4656  
1/2 Gallons  0.0156  64  1/2 Gallons  0.0528  18.9312  
Gallons  0.0078  128  Gallons  0.0264  37.8624  
CCs (Mililiters)  29.58  0.0338  CCs (Mililiters)  1  1  
Liters  0.0296  33.8067  Liters  0.001  1000  
To use the inverse factor, multiply the number of units to convert by the inverse factor. For example, to determine how many Fluid Ounces there are in 37 CCs, multiply 37 times 0.0338 to get 1.25 Fluid Ounces. 