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Counting in Esperanto

Enter a number and get it written in full in Esperanto.

Language overview

Forty-two in Esperanto Esperanto is a constructed international auxiliary language. Invented by Dr. Ludwik Łazarz Zamenhof in 1887, it counts about 100,000 very active speakers, 2 million fluent speakers and one thousand native speakers. Mostly based on European languages (French, German, Polish and Russian), it is written with a modified version of the Latin alphabet, and is very regular in its forms.

Esperanto numbers list

  • 1 – unu
  • 2 – du
  • 3 – tri
  • 4 – kvar
  • 5 – kvin
  • 6 – ses
  • 7 – sep
  • 8 – ok
  • 9 – naŭ
  • 10 – dek
  • 11 – dek unu
  • 12 – dek du
  • 13 – dek tri
  • 14 – dek kvar
  • 15 – dek kvin
  • 16 – dek ses
  • 17 – dek sep
  • 18 – dek ok
  • 19 – dek naŭ
  • 20 – dudek
  • 30 – tridek
  • 40 – kvardek
  • 50 – kvindek
  • 60 – sesdek
  • 70 – sepdek
  • 80 – okdek
  • 90 – naŭdek
  • 100 – cent
  • 1,000 – mil
  • one million – miliono
  • one billion – miliardo
  • one trillion – unu duiliono

Esperanto numbering rules

  • Digits from zero to nine are specific words, namely nul [0], unu [1], du [2], tri [3], kvar [4], kvin [5], ses [6], sep [7], ok [8], and naŭ [9].
  • The tens are formed by adding the ten word (dek) after the matching digit, with the exception of ten where the unit is implicit: dek [10], dudek [20], tridek [30], kvardek [40], kvindek [50], sesdek [60], sepdek [70], okdek [80], and naŭdek [90].
  • Numbers from twenty-one to ninety-one are constructed by saying the ten first, followed by the digit separated with a space (e.g.: dudek kvin [25], kvardek ses [46]).
  • The hundreds are built exactly the same way as the tens (e.g.: cent [100], ducent [200], tricent [300]…), as well as the thousands (e.g.: mil [1,000], dumil [2,000], trimil [3,000]…).
  • The Esperanto language follows the long scale system for naming big numbers: every new word greater than a million is one million times bigger than the previous term. Thus, miliardo is equivalent to 109 (one billion in the US), a trillion (1012) is said duiliono (the biliono word is no longer used due to its ambiguity).

Books

A Complete Grammar Of Esperanto The International LanguageA Complete Grammar Of Esperanto The International Language
by , editors BiblioBazaar (2009)
[Amazon.com Amazon.com]

L’Espéranto de pocheL’Espéranto de poche
by , editors Assimil (2009)
[Amazon.com Amazon.com]

Parlons Espéranto, la langue internationaleParlons Espéranto, la langue internationale
by , editors L’Harmattan (2001)
[Amazon.com Amazon.com]

Articles

Sources

Auxiliary languages

Bolak, Digisk Folkspraak, Esperanto, Folkspraak, Idiom neutral, Ido, Intal, Interlingua, Interlingue, Kotava, Latino sine flexione, Lingua Franca Nova, Mondial, Ro, Solresol, Sona, Spokil, Tutonish, Uropi, and Volapük.

Other supported languages

Supported languages by families
As the other currently supported languages are too numerous to list extensively here, please select a language from the following select box, or from the full list of supported languages.

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