The “Glas” is an intriguing, though lesser-known, unit of volume, traditionally used in the Netherlands to measure wine and spirits. Dating back to the 1800s, one Glas was approximately equivalent to 150 milliliters, aligning closely with a standard modern wine glass. Its historical use highlights how cultures have tailored measurement systems to fit specific social practices, such as enjoying wine in communal settings, thus embodying the close relationship between cultural traditions and measurement systems.
While it has mostly fallen out of use today, the Glas provides a fascinating glimpse into historical consumption habits and the evolution of standard units. It reminds us that units of measurement are not merely mathematical constructs but are also deeply influenced by the lifestyles and practices of their time.
The “kaffekopp” is a traditional Swedish unit of measurement often used in recipes and day-to-day life for measuring volume, particularly liquids like coffee. Equivalent to approximately 1.5 deciliters or about 5 fluid ounces, it offers a convenient, practical standard for home cooks who may not have an exact measuring cup on hand. Interestingly, this unit reflects the cultural importance of coffee in Swedish society, where “fika,” a coffee break combined with pastries, is a cherished daily ritual, fostering community and relaxation.
Unlike more rigidly defined units, the kaffekopp showcases the adaptability of cultural measurements to meet the needs of everyday life. Its use underscores a fascinating intersection between language, culture, and the ordinary routines that shape our lives.
| Glas | Kaffekoppar |
|---|---|
0
glas
|
0
kkp
|
0.5
glas
|
0.666667
kkp
|
1
glas
|
1.33333
kkp
|
1.5
glas
|
2
kkp
|
2
glas
|
2.66667
kkp
|
2.5
glas
|
3.33333
kkp
|
3
glas
|
4
kkp
|
3.5
glas
|
4.66667
kkp
|
4
glas
|
5.33333
kkp
|
4.5
glas
|
6
kkp
|
5
glas
|
6.66667
kkp
|
5.5
glas
|
7.33333
kkp
|
6
glas
|
8
kkp
|
6.5
glas
|
8.66667
kkp
|
7
glas
|
9.33333
kkp
|
7.5
glas
|
10
kkp
|
8
glas
|
10.66667
kkp
|
8.5
glas
|
11.33333
kkp
|
9
glas
|
12
kkp
|
9.5
glas
|
12.66667
kkp
|
10
glas
|
13.33333
kkp
|
10.5
glas
|
14
kkp
|
11
glas
|
14.66667
kkp
|
11.5
glas
|
15.33333
kkp
|
12
glas
|
16
kkp
|
12.5
glas
|
16.66667
kkp
|
13
glas
|
17.33333
kkp
|
13.5
glas
|
18
kkp
|
14
glas
|
18.66667
kkp
|
14.5
glas
|
19.33333
kkp
|
15
glas
|
20
kkp
|
15.5
glas
|
20.66667
kkp
|
16
glas
|
21.33333
kkp
|
16.5
glas
|
22
kkp
|
17
glas
|
22.66667
kkp
|
17.5
glas
|
23.33333
kkp
|
18
glas
|
24
kkp
|
18.5
glas
|
24.66667
kkp
|
19
glas
|
25.33333
kkp
|
19.5
glas
|
26
kkp
|
20
glas
|
26.66667
kkp
|
20.5
glas
|
27.33333
kkp
|
21
glas
|
28
kkp
|
21.5
glas
|
28.66667
kkp
|
22
glas
|
29.33333
kkp
|
22.5
glas
|
30
kkp
|
23
glas
|
30.66667
kkp
|
23.5
glas
|
31.33333
kkp
|
24
glas
|
32
kkp
|
24.5
glas
|
32.66667
kkp
|
25
glas
|
33.33333
kkp
|
25.5
glas
|
34
kkp
|
26
glas
|
34.66667
kkp
|
26.5
glas
|
35.33333
kkp
|
27
glas
|
36
kkp
|
27.5
glas
|
36.66667
kkp
|
28
glas
|
37.33333
kkp
|
28.5
glas
|
38
kkp
|
29
glas
|
38.66667
kkp
|
29.5
glas
|
39.33333
kkp
|
30
glas
|
40
kkp
|
30.5
glas
|
40.66667
kkp
|
31
glas
|
41.33333
kkp
|
31.5
glas
|
42
kkp
|
32
glas
|
42.66667
kkp
|
32.5
glas
|
43.33333
kkp
|
33
glas
|
44
kkp
|
33.5
glas
|
44.66667
kkp
|
34
glas
|
45.33333
kkp
|
34.5
glas
|
46
kkp
|
35
glas
|
46.66667
kkp
|
35.5
glas
|
47.33333
kkp
|
36
glas
|
48
kkp
|
36.5
glas
|
48.66667
kkp
|
37
glas
|
49.33333
kkp
|
37.5
glas
|
50
kkp
|
38
glas
|
50.66667
kkp
|
38.5
glas
|
51.33333
kkp
|
39
glas
|
52
kkp
|
39.5
glas
|
52.66667
kkp
|
40
glas
|
53.33333
kkp
|
40.5
glas
|
54
kkp
|
41
glas
|
54.66667
kkp
|
41.5
glas
|
55.33333
kkp
|
42
glas
|
56
kkp
|
42.5
glas
|
56.66667
kkp
|
43
glas
|
57.33333
kkp
|
43.5
glas
|
58
kkp
|
44
glas
|
58.66667
kkp
|
44.5
glas
|
59.33333
kkp
|
45
glas
|
60
kkp
|
45.5
glas
|
60.66667
kkp
|
46
glas
|
61.33333
kkp
|
46.5
glas
|
62
kkp
|
47
glas
|
62.66667
kkp
|
47.5
glas
|
63.33333
kkp
|
48
glas
|
64
kkp
|
48.5
glas
|
64.66667
kkp
|
49
glas
|
65.33333
kkp
|
49.5
glas
|
66
kkp
|
50
glas
|
66.66667
kkp
|
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