Coffee Brewing Ratio Chart

Standard Brewing Ratio

Cups of 
Coffee

COFFEE TO BE USED   WATER TO BE USED
BY WEIGHTBY MEASURE
OuncesGramsTea
Spoons
Table
Spoons
CupsFluid 
Ounces
Cups

Pints

Quarts1/2 GalCCs 
(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.

Factors for units of measure to get Fluid Ounces needed.
Multiply unit of measure times Fluid Ounces
Teaspoons Tablespoons Cups
1 3 48
Inverse Factors for Fluid Ounces to get measure of coffee needed.
Multiply Fluid Ounces by Inverse Factor to get measure of coffee needed.
Teaspoons Tablespoons Cups
1 0.3333 0.0208
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.