Why are ba and bà counted as different words?

In Vietnamese the tone mark changes the meaning entirely — ba means three, bà means grandmother. They are genuinely different words, so the counter treats every tonal and diacritic variant as a distinct type rather than stripping accents.

How is a word defined?

A word is a run of Vietnamese letters (including all accented vowels and đ) separated by whitespace or punctuation. Each whitespace-separated syllable is counted as one token, which matches how Vietnamese is conventionally tokenised.

Is counting case-sensitive?

No. Words are lower-cased before counting so Nhà and nhà are merged, but tone and vowel diacritics are always kept, so they are never folded away.

Does it handle Vietnamese punctuation?

Yes. Commas, periods, quotation marks and digits are stripped as separators, leaving only the accented Vietnamese letters that form words.

Is my text uploaded anywhere?

No. Tokenising and counting run entirely in your browser. Your text never leaves your device.

Vietnamese Word Frequency Counter

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Vietnamese is a tonal language written with a rich set of diacritics. The six tones — level, falling, rising, dipping-rising, broken and heavy — are marked above or below the vowel, and they change a word’s meaning completely. A frequency counter that strips accents would wrongly merge ba (three), bà (grandmother) and bá (to embrace) into one count. This tool keeps every tone and vowel mark intact so each Vietnamese word is counted as the distinct word it truly is.

How it works

The text is lower-cased so that capitalisation at the start of a sentence does not split a word into two counts.
It is then split on anything that is not a Vietnamese letter — this includes spaces, punctuation, digits and symbols. The full Vietnamese alphabet is preserved: the base Latin letters plus every accented vowel (à á ả ã ạ â ầ ấ ẩ ẫ ậ ă …, and the same for e, i, o, u, y) and the letter đ.
Each surviving token (one whitespace-separated syllable) is tallied. Crucially, no accent folding happens — ba and bà remain separate keys in the tally.

The result is sorted from most to least frequent, with each word’s share of the total shown as a percentage.

Tips and example

Paste Bà ba mua ba quả. Bà rất vui. and the counter reports bà ×2, ba ×2, mua ×1, quả ×1, rất ×1, vui ×1 — correctly keeping bà and ba apart even though they differ only by a tone mark.

Use the ranking to catch repetition in your writing, build vocabulary lists for language learners, or verify that a text-processing pipeline is treating Vietnamese diacritics correctly.