Russian Letter Frequencies

All text files provided are encoded in utf-8. The frequencies from this page are generated from about 275 Million characters of Russian text, sourced from Wortschatz. The text files containing the counts can be used with ngram_score.py and used for breaking ciphers, see this page for details, just substitute out the English ngram file for the one you want. If you want to compute the letter frequencies of your own piece of text you can use this page.

Monogram Frequencies §

Russian single letter frequencies are as follows (in percent %):

А :  8.04        К :  3.49        Х :  1.02
Б :  1.55        Л :  4.32        Ц :  0.58
В :  4.75        М :  3.11        Ч :  1.23
Г :  1.88        Н :  6.72        Ш :  0.55
Д :  2.95        О : 10.61        Щ :  0.34
Е :  8.21        П :  2.82        Ъ :  0.03
Ё :  0.22        Р :  5.38        Ы :  1.91
Ж :  0.80        С :  5.71        Ь :  1.39
З :  1.61        Т :  5.83        Э :  0.31
И :  7.98        У :  2.28        Ю :  0.63
Й :  1.36        Ф :  0.41        Я :  2.00

The russian_monograms.txt file provides the counts used to generate the frequencies above:

russian_monograms.txt

Bigram Frequencies §

We can't list all of the bigram frequencies here, the top 30 are the following (in percent %):

СТ :  1.62        АН :  1.03        ВО :  0.78
ЕН :  1.28        ОС :  1.00        ЕС :  0.76
ОВ :  1.23        ПО :  0.96        АЛ :  0.75
НО :  1.23        ГО :  0.92        ЛИ :  0.74
НИ :  1.22        ЕР :  0.92        ОЛ :  0.73
НА :  1.21        ОД :  0.88        ОМ :  0.71
РА :  1.15        РЕ :  0.87        ЛЕ :  0.70
КО :  1.12        ОР :  0.85        СК :  0.70
ТО :  1.04        ПР :  0.80        ВА :  0.70
РО :  1.04        ТА :  0.79        ЕТ :  0.69

The russian_bigrams.txt file provides the counts used to generate the frequencies above:

russian_bigrams.txt

Trigram Frequencies §

We can't list all of the trigram frequencies here, the top 30 are the following (in percent %):

ЕНИ :  0.46        ЛЬН :  0.27        СТО :  0.22
ОСТ :  0.42        ОВА :  0.26        ПОЛ :  0.21
ОГО :  0.36        НИЯ :  0.25        НОВ :  0.21
СТВ :  0.32        НИЕ :  0.25        ЛЕН :  0.21
СКО :  0.31        ПРИ :  0.24        СТИ :  0.21
СТА :  0.30        ЕНН :  0.24        ПЕР :  0.21
АНИ :  0.29        ГОД :  0.23        ЕГО :  0.20
ПРО :  0.29        ОРО :  0.22        ТСЯ :  0.20
ЕСТ :  0.28        ТЕЛ :  0.22        АСТ :  0.20
ТОР :  0.27        СКИ :  0.22        РОВ :  0.20

The russian_trigrams.txt file provides the counts used to generate the frequencies above:

russian_trigrams.txt.zip

Quadgram Frequencies §

We can't list all of the quadgram frequencies here, the top 30 are the following (in percent %):

ЕНИЯ :  0.16        ЕННО :  0.12        ГОДА :  0.10
ЕНИЕ :  0.16        ЕТСЯ :  0.11        ВАНИ :  0.10
НОГО :  0.14        ИТЕЛ :  0.11        КОГО :  0.10
ЛЬНО :  0.13        ОВАН :  0.11        СТВО :  0.09
ИЧЕС :  0.13        ОТОР :  0.11        СКОЙ :  0.09
НОСТ :  0.13        ОСТА :  0.11        ПРЕД :  0.09
ЧЕСК :  0.13        КОТО :  0.11        ЛЬНЫ :  0.09
ТЕЛЬ :  0.13        СТАВ :  0.10        СТВЕ :  0.09
АЛЬН :  0.13        ЕЛЬН :  0.10        ОСТИ :  0.09
ЛЕНИ :  0.12        ЕСТВ :  0.10        ПЕРЕ :  0.08

The russian_quadgrams.txt file provides the counts used to generate the frequencies above: