Vowel Counter API: The Complete Guide

Need to count vowels in text? This guide covers everything you need to know about vowel counting via API, including frequency analysis and language considerations.

What are Vowels?

Vowels are speech sounds produced without significant constriction of the vocal tract. In English, the vowels are A, E, I, O, U, and sometimes Y. Different languages have different vowel sets.

Example: "Hello World" contains 3 vowels (e, o, o).

Vowel Analysis

Vowel analysis can provide:

  • Total count: Number of vowels in text
  • Frequency breakdown: Count per vowel (a, e, i, o, u)
  • Vowel ratio: Percentage of characters that are vowels
  • Vowel-consonant ratio: Balance of vowels to consonants
Note: The letter Y is sometimes considered a vowel (as in "gym" or "happy"). Configure based on your needs.

Using the Vowel Counter API

TinyFn provides a simple endpoint to count vowels:

API Request
POST https://api.tinyfn.io/v1/text/vowel-count
Headers: X-API-Key: your-api-key
Content-Type: application/json

{
  "text": "Hello World",
  "include_y": false
}
Response
{
  "total_vowels": 3,
  "breakdown": {
    "a": 0,
    "e": 1,
    "i": 0,
    "o": 2,
    "u": 0
  },
  "vowel_percentage": 30.0
}

Parameters

Parameter Type Description
text string The text to analyze (required)
include_y boolean Count Y as a vowel (default: false)
case_sensitive boolean Separate uppercase/lowercase counts (default: false)

Code Examples

JavaScript / Node.js

const response = await fetch(
  'https://api.tinyfn.io/v1/text/vowel-count',
  {
    method: 'POST',
    headers: {
      'X-API-Key': 'your-api-key',
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({ text: 'Hello World' })
  }
);
const result = await response.json();
console.log(result.total_vowels); // 3

Python

import requests

response = requests.post(
    'https://api.tinyfn.io/v1/text/vowel-count',
    headers={'X-API-Key': 'your-api-key'},
    json={'text': 'Hello World'}
)
result = response.json()
print(result['total_vowels'])  # 3

cURL

curl -X POST "https://api.tinyfn.io/v1/text/vowel-count" \
  -H "X-API-Key: your-api-key" \
  -H "Content-Type: application/json" \
  -d '{"text": "Hello World"}'

Common Use Cases

  • Language Learning: Teach vowel recognition
  • Text Analysis: Analyze writing patterns
  • Word Games: Score words based on vowel content
  • Linguistics Research: Study vowel frequency in texts
  • Readability Analysis: Vowel ratio affects pronunciation

Best Practices

  1. Handle Y consistently: Decide upfront whether to include Y
  2. Consider language: Different languages have different vowels
  3. Normalize input: Usually count case-insensitively
  4. Provide breakdown: Show individual vowel counts

Try the Vowel Counter API

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