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Mostwaage converter - conversion among different scales for wine must

This calculator is intended for those who need to convert the amount of sugar in an aqueous solution (sweetness) among different "sugar scales". Since each scale is based on a different principle of determining the sugar content, the resulting values are not and can not be absolutely precise. However, for practical use they are sufficient.

Data entry

Value  
Percentage of non-sugars %
Solution specific gravity

Results

Degrees Brix   °Bx
Normalizovaný moštoměr   °NM
Oechsle mostwage   °Oe
Klosterneuburger mostwage   °KMW
Degrees Baumé ()   °Bé
Degrees Balling   °Bg
Degrees Plató   °P
Sucrose solution density   g/cm3

For the measuring of wine grapes sweetness we offer the optical refractometer RWN10-ATC which is equipped with four sweetness scales: scale of Ceskoslovensky normalizovany mostomer (°ČNM, °NM), scale of the Klosterneuburger mostwaage (°KMW, °Kl, Babo), scale of the Oechsle mostwaage (°Oe) and with versatile scale Brix (°Bx). It is also equipped with one scale for the estimation of alcohol content of naturally fermented wine ABV/%VOL (according to Czech act No 321/2004 Sb.).


Wine classification in variety European countries according to grapes sweetness

German wine classification (Deutsche Prädikatsweine)

Prädikat Translation Minimum must weight Examples of requirements Minimum alcohol level in the wine
Dependent on grape variety and wine-growing region Riesling from Mosel Riesling from Rheingau  
Kabinett Kabinet 67 – 82 °Oe 70 °Oe 73 °Oe 7 %
Spätlese Late harvest 76 - 90 °Oe 76 °Oe 85 °Oe 7 %
Auslese Select harvest 83 - 100 °Oe 83 °Oe 95 °Oe 7 %
Beerenauslese Select berry harvest 110 - 128 °Oe 110 °Oe 125 °Oe 5.5 %
Eiswein Ice wine 110 - 128 °Oe 110 °Oe 125 °Oe 5.5 %
Trockenbeerenauslese Select dry berry harvest 150 - 154 °Oe 150 °Oe 150 °Oe 5.5 %

Austrian wine classification (Österreichische Prädikatsweine)

Prädikatsweine Translation Minimum must weight
Kabinett Kabinet at least 17 °KMW = 84° Oe, max. 13 %VOL
Spätlese Late harvest at least 19 °KMW = 94 °Oe
Auslese Select harvest at least 21 °KMW = 105 °Oe
Eiswein Ice wine at least 25 °KMW = 127 °Oe
Strohwein, Schilfwein Straw wine at least 25 °KMW = 127 °Oe
Beerenauslese Special selection of berries at least 25 °KMW = 127 °Oe
Ausbruch Raisin selection at least 27 °KMW = 138 °Oe
Trockenbeerenauslese Select dry berry harvest at least 30 °KMW

Czech wine classification - quality wine with special attributes according to czech act No 321/2004 Sb. – czech Act on vitiviniculture (Jakostní víno s přívlastkem)

Víno s přívlastkem Translation Minimum must weight - Československý normalizovaný moštoměr [°NM]
Kabinet Kabinet Wine made from grapes whose must-weight levels have reached at least 19 °NM and at least 9.5 % alcohol.
Pozdní sběr Late harvest Wine made from grapes whose must-weight levels have reached at least 21 °NM and at least 9.5 % alcohol.
Výběr z hroznů Special selection of grapes Wine made from grape bunches ripened very long on the vine whose must-weight levels have reached at least 24 °NM and at least 9.5 % alcohol.
Výběr z bobulí Special selection of berries Wine made from selected berries that have ripened very long on the vine whose must-weight levels have reached at least 27 °NM and at least 8 % alcohol.
Výběr z cibéb Special selection of botrytis-affected berries Wine made from selected berries affected by noble rot whose must-weight levels have reached at least 32 °NM and at least 8 % alcohol.
Ledové víno Ice wine Wine made from grapes frozen on the vine. The grapes are pressed frozen at a temperature not greater than -7 °C and with a must-weight level of at least 27 °NM and at least 8 % alcohol.
Slámové víno Straw wine Wine made from grapes dried for at least three months after harvest on straw or reed beds, or suspended in a well-ventilated area. The must-weight of the grape juice at the time of pressing can be at least 27 °NM and at least 6 % alcohol.

Slovak wine classification - quality wine with special attributes according to slovak act No 313/2009 Z. z. – slovak Act on vitiviniculture (Akostné víno s prívlastkom)

Víno s prívlastkom Translation Minimum must weight - (Československý) Normalizovaný muštomer [°NM]
Kabinetné Kabinet Wine made from grapes whose must-weight levels have reached at least 19 °NM and at least 9.5 % alcohol.
Neskorý zber Late harvest Wine made from grapes whose must-weight levels have reached at least 21 °NM and at least 9.5 % alcohol.
Výber z hrozna Special selection of grapes Wine made from grape bunches ripened very long on the vine whose must-weight levels have reached at least 23 °NM and at least 9.5 % alcohol.
Bobuľový výber Special selection of berries Wine made from selected berries that have ripened very long on the vine whose must-weight levels have reached at least 26 °NM and at least 8 % alcohol.
Hrozienkový výber Raisin selection Wine made from manually selected overripe natural grape berries reached at least 28 °NM and at least 8 % alcohol.
Cibébový výber Special selection of botrytis-affected berries Wine made from selected berries affected by noble rot whose must-weight levels have reached at least 28 °NM and at least 8 % alcohol.
ľadové víno Ice wine Wine made from grapes frozen on the vine. The grapes are pressed frozen at a temperature not greater than -7 °C and with a must-weight level of at least 27 °NM and at least 6 % alcohol.
Slamové víno Straw wine Wine made from grapes dried for at least three months after harvest on straw or reed beds, or suspended in a well-ventilated area. The must-weight of the grape juice at the time of pressing can be at least 27 °NM and at least 6 % alcohol.

Comparison of Czech, Slovak Austrian and German classification of wines

Wine Czech Republic Slovakia Austria Germany
Kabinet 19 °NM
9.5 % ABV
kabinet
19 °NM
9.5 % ABV
kabinetné
17 °NM
9 % ABV
Kabinett
15 °NM
7 % ABV
Kabinett
Late harvest 21 °NM
9.5 % ABV
pozdní sběr
21 °NM
9.5 % ABV
neskorý zber
19 °NM
5 % ABV
Spätlese
19 °NM
7 % ABV
Spätlese
Special selection of grapes 24 °NM
9.5 % ABV
výběr z hroznů
23 °NM
9.5 % ABV
výber z hrozna
21 °NM
5 % ABV
Auslese
21 °NM
Auslese
Special selection of berries 27 °NM
8 % ABV
výběr z bobulí
26 °NM
8 % ABV
bobuľový výber
25 °NM
5 % ABV
Beerenauslese
25 °NM
5.5 % ABV
Beerenauslese
Special selection
of botrytis-affected berries
32 °NM
8 % ABV
výběr z cibéb
28 °NM
8 % ABV
hrozienkový výber
27 °NM
5 % ABV
Ausbruch
29 °NM
5.5 % ABV
Trockenbeerenauslese
28 °NM
8 % ABV
cibébový výber
30 °NM
5 % ABV
Trockenbeerenauslese
Ice wine 27 °NM
6 % ABV
ledové
27 °NM
6 % ABV
ľadové
25 °NM
5 % ABV
Eiswein
25 °NM
5.5 % ABV
Eiswein
Straw wine 27 °NM
6 % ABV
slámové
27 °NM
6 % ABV
slamové
25 °NM
5 % ABV
Strohwein
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