Russian Currency in Words

The Russian Currency in Words tool writes a ruble amount out as a Russian сумма прописью — the spelled-out figure required on invoices and contracts. It handles the two grammar features that trip people up: the gender of the units (рубль is masculine, копейка is feminine) and the count-form endings that change with the last digits of the number.

How it works

1. Rubles in words. The whole-ruble part is converted to Russian words using gender-aware units (один рубль, два рубля), correct teens, tens, hundreds, and the feminine thousands group (одна тысяча, две тысячи).
2. Count-form for рубль. The ruble word is chosen from the amount’s last digits: 1 → рубль, 2–4 → рубля, 0 or 5–20 → рублей, with the teens 11–14 always taking рублей.
3. Kopeks. The two-decimal remainder is the kopek count, shown as digits plus the matching form of копейка (1 копейка, 2 копейки, 56 копеек), the way Russian accounting documents present it.

Tips and example

1 234,56 ₽  →  одна тысяча двести тридцать четыре рубля 56 копеек

• Enter the amount with a dot or comma; both 1234.56 and 1234,56 work.
• A single ruble reads as один рубль; 21 rubles is двадцать один рубль, because the count-form depends on the last digit even in large numbers.
• Zero kopeks reads as 00 копеек, and a round amount like 100 ₽ gives сто рублей 00 копеек, keeping the standard two-part invoice phrasing.