Achtel
eighth
One of eight equal parts of a whole. Used as a fraction (1/8) or as a quantity.
Für das Rezept benötigst du einen Achtel Liter Milch.
For the recipe, you need an eighth of a liter of milk.

eighth
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eighth
One of eight equal parts of a whole. Used as a fraction (1/8) or as a quantity.
Für das Rezept benötigst du einen Achtel Liter Milch.
For the recipe, you need an eighth of a liter of milk.

'Achtel' (eighth) is a fraction noun derived from the number 'acht' (eight). Like other fractions ('Viertel' = quarter, 'Drittel' = third), it is capitalized.
Ein Achtel ist mehr als ein Zehntel.
An eighth is more than a tenth.
The meaning of 'Achtel' (eighth) becomes clear from the context. Quantities like 'Liter' or 'Kilo' point to the fraction. The word 'Wein' points to the unit of measure in Austria. Terms like 'Note' or 'Takt' belong to music.
Schneide die Torte bitte in acht gleiche Teile, jeder bekommt ein Achtel.
Please cut the cake into eight equal pieces; everyone gets an eighth.
As a quantity, 'Achtel' (eighth) usually stands without an article before the unit of measure. You say 'ein Achtel Liter' (an eighth of a liter), not 'ein Achtel des Liters' (an eighth of the liter).
Gib bitte einen Achtel Liter Sahne in die Suppe.
Please add an eighth of a liter of cream to the soup.
The use of 'Achtel' (eighth) as a measure for a glass of wine (0.125 l) is especially common in Austria and an important part of the local Heuriger and tavern culture.
In österreichischen Lokalen steht das „Achtel“ oft auf der Weinkarte.
In Austrian restaurants, the 'Achtel' often appears on the wine list.
half
'die Hälfte' and 'Achtel' both refer to parts of a whole. The difference is the size of the part: 'die Hälfte' is one of two equal parts, so 1/2. 'Achtel' is one of eight equal parts, so 1/8. They can be confused when talking about fractions, quantities, or dividing up food. The important point is: two halves make a whole; eight eighths make a whole.

Für das Rezept braucht Luisa nur ein Achtel der Butter.
For the recipe, Luisa only needs an eighth of the butter.
Emma gibt ihrer Freundin die Hälfte vom Kuchen.
Emma gives her friend half of the cake.