The ratio of coffee to water the standard brewing ratio of coffee.

(source: google)

Standard brewing ratio (Standard Brewing Ratio)

Coffee cup count

The amount of coffee used COFFEE TO BE USED

Water consumption WATER TO BE USED

Cups of Coffee

By weight

Meter by measuring tool

BY WEIGHT

BY MEASURE

Ounce Ounces

Gram Grams

Teaspoon Tea

Spoon Table

Cup Cups

Coffee liquid (oz)

Number of cups Cups

Pint Pints

Quart Quarts

One GAL, two gallons, two gallons.

Ml CCs (milliliters)

L Liters

Spoons

Spoons

Fluid

Ounces

1

0.38

11

6

2

January 8th

8

1

January second

January fourth

January 8th

237

0.2

2

0.75

21

12

4

January fourth

16

2

1

January second

January fourth

473

0.5

3

1.13

32

18

6

March 8th

24

3

1 1/2

March fourth

March 8th

710

0.7

4

1.5

43

24

8

January second

32

4

2

1

January second

947

1

5

1.88

53

30

10

May 8th

40

5

2 1/2

1 1/4

May 8th

1183

1.2

6

2.25

64

36

12

March fourth

48

6

3

1 1/2

March fourth

1420

1.4

7

2.63

74

42

14

July 8th

56

7

3 1/2

1 3/4

July 8th

1656

1.7

8

3

85

48

16

1

64

8

4

2

1

1893

1.9

9

3.38

96

54

18

1 1/8

72

9

4 1/2

2 1/4

1 1/8

2130

2.1

10

3.75

106

60

20

1 1/4

80

10

5

2 1/2

1 1/4

2366

2.4

11

4.13

117

66

22

1 3/8

88

eleven

5 1/2

2 3/4

1 3/8

2603

2.6

twelve

4.5

one hundred and twenty eight

seventy-two

twenty-four

1 1/2

ninety-six

twelve

six

three

1 1/2

2840

2.8

If you know the amount of coffee powder, multiplied by the coefficient 21.33, you know how many ounces of water you need (0.046875 is the inverse coefficient), multiplied by the coefficient 22.2593, you get how many milliliters of water you need (0.04493 is the inverse coefficient).

For example, if you have 1.2oz coffee powder, multiply it by 21.33g, you will need 25.6oz water; 92.6g coffee powder will need 2061CCs water. The amount of coffee powder required can be obtained by multiplying the inverse coefficient with the known amount of water.

The brewing ratio of enthusiasts Connoisseur's Brewing Ratio

Cups of Coffee

The amount of coffee used COFFEE TO BE USED

Water consumption WATER TO BE USED

BY WEIGHT

BY MEASURE

Ounces

Grams

Tea

Table

Cups

Fluid

Cups

Pints

Quarts

1/2 Gal

CCs

Liters

Spoons

Spoons

Ounces

(milliliters)

one

0.38

10.6

six

two

January 8th

six

March fourth

March 8th

March sixteenth

3/32

one hundred and seventy seven

0.18

two

0.75

21.3

twelve

four

January fourth

twelve

1 1/2

March fourth

March 8th

March sixteenth

three hundred and fifty five

0.35

three

1.13

31.9

eighteen

six

March 8th

eighteen

2 1/4

1 1/8

September sixteenth

9/32

five hundred and thirty two

0.53

four

1.5

42.5

twenty-four

eight

January second

twenty-four

three

1 1/2

March fourth

March 8th

seven hundred and ten

0.71

five

1.88

53.2

thirty

ten

May 8th

thirty

3 3/4

1 7/8

15/16

15/32

eight hundred and eighty seven

0.89

six

2.25

63.8

thirty-six

twelve

March fourth

thirty-six

4 1/2

2 1/4

1 1/8

September sixteenth

1065

1.06

seven

2.63

74.4

forty-two

fourteen

July 8th

forty-two

5 1/4

2 5/8

1 5/16

21/32

1242

1.24

eight

three

85.1

forty-eight

sixteen

one

forty-eight

six

three

1 1/2

March fourth

1420

1.42

nine

3.38

95.7

fifty-four

eighteen

1 1/8

fifty-four

6 3/4

3 3/8

1 11/16

27/32

1597

1.6

ten

3.75

one hundred and six

sixty

twenty

1 1/4

sixty

7 1/2

3 3/4

1 7/8

15/16

1775

1.77

eleven

4.13

one hundred and seventeen

sixty-six

twenty-two

1 3/8

sixty-six

8 1/4

4 1/8

2 1/16

1 1/32

1952

1.95

twelve

4.5

one hundred and twenty eight

seventy-two

twenty-four

1 1/2

seventy-two

nine

4 1/2

2 1/4

1 1/8

2130

2.13

If you know the amount of coffee powder, times the coefficient 16, you know how many ounces of water you need (0.0625 is the inverse coefficient), multiplied by the coefficient 16.6945, you get how many milliliters of water you need (0.04493 is the inverse coefficient).

For example, if you have 1.2oz coffee powder multiplied by 16.0, you need 19.2oz water; 92.6g coffee powder requires 1562CCs (1.56L) water. The amount of coffee powder required can be obtained by multiplying the inverse coefficient with the known amount of water.

Comparing the two tables, it is not difficult to find that the so-called brewing of enthusiasts is just a little higher in concentration and heavier in taste. Simple and simple words: one serving of powder, about 16 parts of water.

The picture below is the coffee brewing rate chart of SCAA, which looks a little confused.

(source: scaa.org)

Source: Blackbearcoffee translation: Huang Wei (Sina Huang Wei boutique coffee)