What are the four plural classes?

Romanian nouns commonly pluralise with -i (băiat → băieți), -e (masă → mese), -uri (lucru → lucruri) or -le (stea → stele). The class depends on gender and the noun ending.

When does a number take de before the noun?

Romanian inserts the genitive marker de when the count is 0 or its last two digits fall outside 1–19. So you say două mere (2 apples) but douăzeci de mere (20 of apples).

What are the CLDR categories for Romanian?

Romanian has three: one (exactly 1), few (0 and counts whose last two digits are 1–19), and other (everything else, which takes de). The tool shows which category your count falls into.

Does the tool handle stem changes?

It applies the ending mechanically. Romanian also alternates stem vowels and consonants (a→ă, t→ț, c→ci), so the suggested plural may need manual checking for irregular stems.

Is anything sent to a server?

No. Plural formation and the agreement logic run entirely in your browser.

Romanian Plural Helper

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This helper does two related jobs for Romanian nouns: it forms the plural using one of the four common plural classes, and it shows the count-agreement form a numeral takes — including the surprising de rule.

How it works

Romanian plurals fall mainly into four ending classes. The tool applies the ending you select and adjusts a final vowel where needed:

-i — most masculines and many feminines: băiat → băieți, carte → cărți
-e — many feminines and neuters: masă → mese
-uri — many neuters: lucru → lucruri, tren → trenuri
-le — feminines ending in a stressed -a/-ea: stea → stele, cafea → cafele

For count agreement, Romanian uses the CLDR plural rules:

one — exactly 1 → singular noun, no de
few — 0, and any count whose last two digits are 1–19 → bare plural, no de
other — everything else → plural with the genitive marker de

So 2 mere and 19 mere stay bare, but 20 de mere, 100 de mere and 1.000 de mere all take de.

Notes

The ending transformation is mechanical; Romanian stems frequently alternate (a → ă, t → ț, c → ci, d → z). Treat the suggested plural as a starting point and verify irregular stems against a dictionary.