This tool spells any whole number into Russian words, applying the language’s grammatical gender and plural agreement automatically. It runs entirely in your browser.
How it works
Each three-digit group is spelled and joined to its scale word — тысяча (thousand), миллион (million), миллиард (billion). Two agreement rules are applied:
- Gender — the number 1 (and 2) agree with the feminine тысяча, so it becomes одна/две rather than один/два.
- Plural form — the scale word takes the standard 1 / 2-4 / 5+ endings: тысяча after 1, тысячи after 2-4, and тысяч after 5 and above.
Example
| Number | Russian |
|---|---|
| 1,000 | одна тысяча |
| 2,000 | две тысячи |
| 5,000 | пять тысяч |
So 1234 spells out as одна тысяча двести тридцать четыре.
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Why Russian number agreement is complex
Russian is a highly inflected language, and number phrases are one of its grammatically demanding areas. Three interlocking rules affect how a number is spelled:
Rule 1 — Gender agreement for 1 and 2
The words for one and two change based on the grammatical gender of the noun that follows:
| Noun (gender) | One | Two |
|---|---|---|
| тысяча (feminine) | одна | две |
| миллион (masculine) | один | два |
| миллиард (masculine) | один | два |
So 21,000 is двадцать одна тысяча, but 21,000,000 is двадцать один миллион.
Rule 2 — The three-way plural of scale words
Russian distinguishes three count forms for nouns after numbers. The rule depends on the last two digits:
| Last two digits | тысяча form | Example |
|---|---|---|
| 11–19 | тысяч | одиннадцать тысяч |
| Ending in 1 (not 11) | тысяча | двадцать одна тысяча |
| Ending in 2–4 (not 12–14) | тысячи | две тысячи |
| Ending in 5–9, 0 | тысяч | пять тысяч |
Rule 3 — The teens exception
Numbers 11-19 always take the genitive plural form regardless of the decade rule — so 11 тысяч, 12 тысяч, 13 тысяч, and so on. The converter handles all three rules automatically.
When you need written Russian numbers
- Banking and finance: Russian bank documents, contracts, and cheques require amounts in words, written in this grammatically correct form.
- Legal texts: Russian civil code and notarial documents require numbers to be spelled out in full.
- Language learning: practising these agreement rules is essential for Russian learners at B1 level and above.
- Propis’ (прописью): the Russian word for the written-out form of a number, used widely in formal documents and accounting.