Count letter occurrences and percentages in text

Measure occurrences of ASCII A–Z while separating the five fixed vowels from the remaining accepted letters.

freeworks offlinenothing uploaded
ToolLetter Frequency
Input
Output
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Preview

How it works

Each accepted Latin letter increments a map under its original case or a lowercase key, and rows sort from highest count to lowest. Case folding and hiding zero-count alphabet rows are the defaults; percentages divide by accepted letters rather than total source characters.

  • Vowels are exactly a, e, i, o, and u, leaving y in the consonant total.
  • Equal-frequency rows retain first-seen order unless the complete alphabet was prefilled.

Worked example

Analyze letter frequencies
Count letter occurrences in a phrase
Input
											hello world
Output
												Letter  Count  Percentage
------  -----  ----------
l       3      30
o       2      20
h       1      10
e       1      10
w       1      10
r       1      10
d       1      10

When to use this

Classical-cipher classes compare distributions, letter-board planners count required tiles, and word-game players inspect puzzle-list alphabets.

Edge cases

  • é and ñ do not fold to e and n because only the ASCII ranges A–Z and a–z are accepted.
  • Y remains a consonant even in an English word where its sound functions as a vowel.
  • When all alphabet rows are shown, zero-count letters do not become the least-common present letter.