Free Online Tools by AnjonIT: 53 Text, Calculator and Developer Tools That Run in Your Browser

We use small online tools every single day: a word counter before sending an article, a JSON formatter while debugging an API, a time zone converter before booking a call with a client abroad. For years we used whatever came up first in Google, and most of those free online tools came with the same problems. Pop-ups everywhere, “create an account to continue”, pages that took ages to load, and a quiet worry about where our pasted text was actually going.

So we built our own. AnjonIT Tools is a collection of 53 free online tools for text, calculations, conversions and development work. They are fast, they work on any device, and almost everything runs right inside your browser. This post explains what makes them different and gives you a quick tour, so you know exactly where to go next time you need one.

What makes our free online tools different

• Your text stays on your device. The tools do their work with JavaScript inside your browser. When you paste an article into the word counter or a password is generated, that content is processed on your own device instead of being uploaded to our server.
• No sign up, no limits. Open a tool and use it. There is no account, no daily cap and no “premium” button hiding the useful features.
• Instant results. Most tools update as you type, so there is no submit button and no waiting for a page to reload.
• Works on any screen. Every tool is designed for phones as well as laptops, and supports light and dark mode.
• Clear instructions on every page. Each tool explains how to use it, with real examples and answers to common questions.

All 53 free online tools at a glance

Group	Tools	Popular picks
Case Converter	18	Title case, sentence case, camelCase, snake_case
Text Tools	12	Word counter, find and replace, Post Purifier
Calculators	12	Time zone converter, loan, percentage, BMI
Unit Converters	4	Length, weight, temperature, volume
Developer Tools	4	JSON formatter, Base64, URL encoder, SHA hash
Generators	3	Password, random number, UUID

Case converter tools: fix capital letters in one click

Typed a whole paragraph with Caps Lock on? Need a headline in proper title case? The case converter group has 18 tools for every style of capitalisation.

• For writers: title case, sentence case, uppercase, lowercase and capitalize each word.
• For developers: camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case and path/case, perfect for variable names, CSS classes and URL slugs.
• For fun: alternating case, random case and small caps text you can paste into social media bios.

Text tools: count, clean and edit text faster

These are the free online tools we use the most when writing blog posts and preparing content for clients.

• Word Counter: words, characters, sentences, reading time and keyword density, updated as you type.
• Find and Replace: replace several different words at once by adding rows with the + button, with match case, whole words and regex options.
• Post Purifier: paste content from Google Docs, Word or ChatGPT and get clean HTML that is ready for WordPress, without messy inline styles.
• List helpers: remove duplicate lines, sort lines alphabetically, add a prefix or suffix to every line, and remove line breaks from text copied out of PDFs and emails.
• Extras: character counter for social media limits, text repeater, reverse text and a lorem ipsum generator for design mockups.

Calculators: everyday maths without the guesswork

• Time Zone Converter: a live clock for as many cities as you like, with daylight saving handled automatically. We use it before every international meeting.
• Loan Calculator: monthly payment, total interest and a full schedule, with the loan term in years or months.
• Percentage Calculator: percent of a number, percentage change and the other everyday percentage questions.
• Health and money: a BMI calculator with metric and imperial units, compound interest, VAT, discount and tip calculators.
• Dates and time: exact age, days between two dates (including working days), add or subtract days, and a work hours calculator with breaks.

Unit converters

Simple, fast converters for length, weight, temperature and volume. They are handy for recipes, shopping from overseas stores, travel, and school homework.

Developer tools

• JSON Formatter: beautify, minify and validate JSON, with clear error messages when something is broken.
• Base64 and URL encode and decode: quick conversions for APIs, query strings and data URLs.
• SHA Hash Generator: SHA-1, SHA-256, SHA-384 and SHA-512 hashes, created with your browser’s built-in Web Crypto features.

Generators

• Password Generator: strong random passwords created with your browser’s secure random number generator. The password is made on your device and never travels over the internet.
• Random Number Generator: pick numbers in any range, with or without repeats. Great for giveaways and raffles.
• UUID Generator: create version 4 UUIDs in bulk for databases and testing.

How these free online tools fit into a real workflow

The tools are most useful when you chain a few together. Here are three routines we use ourselves:

Publishing a blog post

1. Write the draft in Google Docs.
2. Paste it into Post Purifier to get clean HTML for WordPress.
3. Check the length and keyword density with the word counter.
4. Fix the headline with the title case converter.

Debugging an API

1. Paste the response into the JSON formatter to read it properly.
2. Decode any Base64 or URL encoded values.
3. Generate test IDs with the UUID generator.

Running a small business

1. Add VAT to a quote with the VAT calculator.
2. Work out a sale price with the discount calculator.
3. Total up staff hours with the hours calculator.
4. Plan calls with overseas clients using the time zone converter.

A note on privacy

Many free online tools send whatever you paste to their server to process it. Ours are built differently. The tool logic is written in JavaScript and runs in your browser, so the text, numbers and passwords you work with are handled on your own device. Like most free websites, the pages show ads to cover hosting costs, and our privacy policy explains exactly how that works.

Frequently asked questions

Are AnjonIT’s online tools really free?

Yes. Every tool is free to use with no account and no usage limits. Ads on the pages help pay for hosting and new tools.

Do I need to install anything?

No. The tools run in any modern browser on Windows, Mac, Linux, Android and iPhone. Just open the page.

Is my text saved anywhere?

No. The tools process your content in your browser and do not store it. If you close or refresh the page, the text is gone, so copy your result before leaving.

Can I suggest a new tool?

Please do. Many of our tools started as requests. Send your idea through our contact page and tell us how you would use it.

Try them today

We built these free online tools to save ourselves a few minutes every day, and we hope they do the same for you. Bookmark the AnjonIT Tools home page, and the right tool is always one click away.