Text Tools & Calculators

Not every tool is a generator. Sometimes you just need to fix the case on a heading you typed in caps lock, count words against a strict limit, rearrange some letters, or work out an exact age without doing calendar maths in your head. This hub gathers AddonSpot’s free text tools and calculators — small, fast utilities that give you a precise answer the moment you type. Everything here runs entirely in your browser, so your text and dates stay private, with no signup, upload, or paywall.

Start with the Text Case Converter below — paste any text to switch it between UPPERCASE, lowercase, Title Case, and Sentence case, and watch the live word, character, and sentence counts update as you type.

How the Text Case Converter works

Paste or type into the box and the tool does two jobs at once: it converts the case of your text on demand, and it counts it live. There is nothing to submit and nothing to wait for — every keystroke updates the numbers instantly.

The four case buttons each rewrite the text in place:

• UPPERCASE turns every letter into a capital — HELLO WORLD. Useful for headlines, constants in code, or emphasis.
• lowercase drops every letter to small — hello world. The fix for text accidentally typed with caps lock on, and the required form for things like email addresses, URLs, and hashtags.
• Title Case capitalises the first letter of every word — Hello World. The standard for headlines, book titles, and headings.
• Sentence case capitalises the first letter of each sentence and lowercases the rest — Hello world. A new sentence. The natural form for body text and normal writing.

Below the box, four live readouts track your character count, word count, sentence count, and estimated reading time. The character count includes spaces, the word count splits on whitespace, and the reading time is based on an average of 200 words per minute. Hit Copy to grab the result, or Clear to start again.

See the converter in action

Take one messy line typed half in caps lock and run it through each mode. Starting from the QUICK brown fox. jumps OVER the lazy dog! the converter produces:

• UPPERCASE — THE QUICK BROWN FOX. JUMPS OVER THE LAZY DOG!
• lowercase — the quick brown fox. jumps over the lazy dog!
• Title Case — The Quick Brown Fox. Jumps Over The Lazy Dog!
• Sentence case — The quick brown fox. Jumps over the lazy dog!

The live readout for that line shows 45 characters, 9 words, 2 sentences, and a reading time under a minute. Notice how Sentence case both fixes the random capitals and restores the capital after the full stop — it lowercases everything first, then re-capitalises each sentence opener, so a line that came in shouting ends up correctly punctuated in one click.

When each text case is the right one

Choosing the correct case is not just cosmetic — some platforms and formats actively require a specific one.

Use lowercase for email addresses, website URLs, hashtags, and CSS classes, where capitals are either ignored or actively break things. It is also the quickest fix when you have pasted a block of text that came in shouting.

Use Title Case for the titles of articles, books, songs, and headings, and for navigation labels and buttons. It signals “this is a name or a heading” at a glance. If you want to go deeper on the rules, the difference between title case and sentence case is covered well in this overview of letter case.

Use Sentence case for body copy, product descriptions, UI messages, and increasingly for headlines too — many modern brands prefer it because it reads as friendlier and less formal than Title Case.

Use UPPERCASE sparingly, for short labels, warnings, or deliberate emphasis. A whole paragraph in capitals is hard to read and reads as shouting, so reserve it for a few words at a time.

The three specialist tools in this category

The converter above handles case and quick counts. For deeper jobs, use one of the dedicated tools:

• Sentence & Word Counter — live counts of words, characters, sentences, paragraphs, and reading time as you type. The tool to reach for when you are writing to a strict limit — an essay word count, a meta description, a tweet.
• Anagram Maker — rearrange the letters of any word or phrase into new combinations, with full-shuffle and split-and-regroup modes. Handy for puzzles, wordplay, and spinning a fresh username out of your own name.
• Age Calculator — the exact age between any two dates in years, months, and days, plus totals in weeks, days, and hours. It borrows days correctly, so leap years come out right.

All four tools share the same principle: fast, accurate, and completely private. Nothing you type is uploaded or stored.

Why word and character counts matter

A character or word count looks trivial until a platform enforces one. The gap between fitting and overflowing is often a handful of characters, and it decides whether your text publishes cleanly or gets cut off mid-word.

Search results are ruthless about length. A page title over about sixty characters gets truncated in Google, and a meta description over about a hundred and sixty is cut with an ellipsis — often right where the important part was. Writing to those limits is the difference between a clean listing and a clipped one.

Social platforms hard-cap you. A post that is one character too long for X simply will not send. An Instagram bio caps at 150 characters; an SMS splits into two messages at 160. Knowing the number before you write saves the rewrite.

Academic and professional writing sets exact targets. Essays, abstracts, cover letters, and grant applications frequently specify a word count with no tolerance. A live counter that updates as you type keeps you honest without breaking your flow.

Common character and word limits

These are the limits people write against most often. Generate or edit your text, check it with the word counter, and trim to fit before you publish.

These figures shift as platforms update, so treat them as working guides and confirm against the live field where it matters most. Reading time, shown by the converter above and the dedicated counter, is based on the widely used average of 200 words per minute for adult silent reading.

Getting an accurate word count

“How many words is this?” sounds simple until you notice that different tools give slightly different answers. The reason is that they disagree on what counts as a word. These tools split on whitespace — any run of non-space characters between spaces is one word — which matches how most word processors and the majority of style guides count.

A few cases are worth knowing about. A hyphenated word like “well-known” counts as one, because there is no space in it. A number like “2026” counts as one word. An em dash with spaces around it counts as a word on its own, while one jammed between words does not. And a URL or email address counts as a single long word. None of this matters for casual writing, but when you are ten words over a hard limit it explains why your count and someone else’s might differ by a handful.

For character limits the rules are simpler and stricter: every character counts, including spaces and punctuation, which is exactly how X, SMS, and meta-tag limits measure too. That is why the converter’s character count is usually the number to watch for anything published online.

Who uses these text tools

Writers and students

Hit an exact essay or article word count without counting by hand, fix the case on a title, and check reading time before you submit. The word counter and the case converter cover most day-to-day writing chores.

Marketers and content creators

Write titles and meta descriptions to their SEO limits, trim social captions to fit, and keep headlines in a consistent case across a brand. Pairs naturally with the naming tools if you are also working on a brand name or tagline.

Developers and data folk

Normalise text case for slugs, keys, and constants; clean up pasted data; and count characters against database or API limits. Lowercase and UPPERCASE conversions handle the most common normalisation jobs in one click.

Puzzlers and word-game players

Rearrange letters with the Anagram Maker for crosswords, Scrabble, and riddles — or to coin a new handle. If a username is the goal, the Username & Handle Generators take it from there.

Tips for working with text faster

• Fix case last. Write your text first, then convert the case in one pass — it is faster than fighting caps lock or the shift key while you draft.
• Count before you cut. Check the number first, then trim deliberately, rather than guessing and re-pasting. You will keep more of what matters.
• Watch the character count, not just words, for anything online. Most platforms limit characters, not words, and a low word count can still be over a character cap if the words are long.
• Keep sentences short for readability. The sentence counter is a quick proxy for pace — a low word-to-sentence ratio usually reads more easily than a high one.
• Everything stays on your device. Because these tools run in your browser, you can safely paste sensitive drafts, private notes, or unpublished work without any of it leaving your computer.

Frequently asked questions

Are these text tools free?
Yes. Every tool on AddonSpot is free with no signup, no download, and no limit on how much text you process. See the full FAQ for more.

What is the difference between Title Case and Sentence case?
Title Case capitalises the first letter of every word (The Quick Brown Fox), which suits headings and titles. Sentence case capitalises only the first letter of each sentence (The quick brown fox), which suits normal body text.

Does the character count include spaces?
Yes. The character count counts every character you type, spaces included, because that is how most platform limits — like X and SMS — count too.

How is reading time calculated?
It divides your word count by 200 words per minute, the common average for adult silent reading, and rounds up to the nearest minute.

Is my text stored or uploaded?
No. Everything runs entirely in your browser. Your text never reaches a server and nothing is saved when you close the tab.

Can I convert a huge document?
Yes. The converter handles long text, though for detailed statistics on very large documents the dedicated Sentence & Word Counter gives a fuller breakdown.

Why did Sentence case capitalise a letter after an abbreviation?
The tool treats any period followed by a space as the end of a sentence, so an abbreviation like “U.S.” mid-sentence can trigger a capital. Give the result a quick read — it is right the vast majority of the time.

Can I request a text tool you don’t have yet?
Yes — tell us what you need on the Suggest a Tool page.

Related categories

• Username & Handle Generators — catchy handles for any platform.
• Gaming Name Generators — clan names and gamertags.
• Brand & Book Names — brandable business names and book titles.

New tools are added regularly — you can read more about how and why we build them on the About page.