ForHosting KIT · Developer Utilities

Unique words count calculator

Writers, teachers, and language learners often ask a sharper question than raw word count: how much of this passage is new vocabulary versus recycled phrasing.

● BetaFree · in your browser

Run — free How it works & API

Use it from WebAPIEmailTelegramApp soon

A paragraph can look long while repeating the same handful of terms, or stay short while packing many distinct words. This unique words count calculator tokenizes your text with Unicode-aware rules, counts every word occurrence, counts how many of those tokens are distinct under an optional case-insensitive policy, and reports the gap as repeated occurrences plus clear ratios. You see total words, unique words, repeated words, the classic unique ratio (type-token ratio), the complementary repeated ratio, and when repeats exist the ratio of unique words to repeated occurrences. Students use it to gauge lexical variety in essays; editors use it to flag thin vocabulary before publication; tutors and LMS tools call the same deterministic contract so a free browser check matches the paid API path byte for byte.

How to use it

Enter your values in the form above. The tool checks them before calculating and shows the result on the same page.

Check your inputs

Use the labels and units shown next to each field. If something is missing or outside the allowed range, the page points to the field to fix.

Use it again or automate it

Use the browser tool for individual checks and the API when you need the same capability in an automated workflow.

What you can do with it

Get an answer now

Enter one set of values and see the result without building a spreadsheet or script.

Compare scenarios

Change one value at a time and rerun the calculation to understand what affects the result.

Automate repeated work

Use the API when the same calculation needs to run inside your product or workflow.

FAQ

How do I use this capability?

Complete the fields above and run it on this page. The form highlights anything that needs attention.

For developers — API access

Everything on this page is available programmatically. This section is for teams who want to wire it into their own systems; everyone else can just use the tool above.

API endpoint

POSThttps://api.kit.forhosting.com/edu/unique-words-count

Prefer to automate it? One authenticated POST creates the task; the result comes back by webhook or a signed link. The same capability also runs here on the web, by email and from Telegram — and soon from our app too.

Call it from your stack

curl -X POST https://api.kit.forhosting.com/edu/unique-words-count \
  -H "Authorization: Bearer $KIT_KEY" \
  -H "Content-Type: application/json" \
  -d '{"text":"The quick brown fox jumps over the lazy dog. The fox is quick!"}'

const res = await fetch("https://api.kit.forhosting.com/edu/unique-words-count", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.KIT_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "text": "The quick brown fox jumps over the lazy dog. The fox is quick!"
  })
});
const { task_id } = await res.json();

import os, requests

res = requests.post(
    "https://api.kit.forhosting.com/edu/unique-words-count",
    headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
    json={
    "text": "The quick brown fox jumps over the lazy dog. The fox is quick!"
},
)
task_id = res.json()["task_id"]

<?php
$res = file_get_contents("https://api.kit.forhosting.com/edu/unique-words-count", false, stream_context_create([
  "http" => [
    "method"  => "POST",
    "header"  => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
    "content" => '{"text":"The quick brown fox jumps over the lazy dog. The fox is quick!"}',
  ],
]));
$task = json_decode($res, true);

body := bytes.NewBufferString(`{"text":"The quick brown fox jumps over the lazy dog. The fox is quick!"}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/edu/unique-words-count", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)

Example request

{
  "text": "The quick brown fox jumps over the lazy dog. The fox is quick!"
}

Example response

{
  "task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
  "type": "edu.unique_words_count",
  "status": "queued",
  "_links": {
    "result": "/tasks/tsk_…/result"
  }
}

The API is asynchronous: the call returns a task_id immediately and the result arrives by webhook. Polling is capped at 1 req/s per task.

Pricing

Per request$0.002

Published price — no tokens, no invented credits. A failed task is never charged.

Errors

HTTP	Code	Meaning
`401`	`unauthorized`	Missing or invalid API key.
`402`	`insufficient_balance`	Your balance doesn't cover the task price.
`404`	`unknown_type`	That task type doesn't exist.
`429`	`rate_limited`	Too many requests. Use the webhook instead of polling.

Read the full KIT documentation →