Last updated: 21 October 2026
Mubarak4u is a free website with online tools and plain-language guides for everyday tasks: interest, GST, dates, marks, image sizes and more.
Who runs Mubarak4u
I’m Kailash Choudhary, and I run this site from Makrana, Rajasthan. I have a B.A. degree and have worked in content writing and website creation for a year.
I started Mubarak4u because I kept needing small tools for forms, bills and calculations, and most sites made me sign up or sit through ads. I wanted tools that open fast on any phone, work without an account, and show how each result is worked out.
I’m not a CA or a financial advisor. When a tool depends on an official rule, I check the official source.
How this site is made
I build and edit Mubarak4u myself, and I use AI tools such as Claude to help with code and drafts. I review what they produce before it goes live, and I fix mistakes when I or a visitor find them.
What you can find here
The site has five groups of tools:
- Text tools: number to words, line sorting and more.
- Calculators: interest, GST, dates, percentages and more.
- Image tools: compress, resize and convert pictures.
- Converters: land area, number systems and Roman numerals.
- Everyday utilities: a Pomodoro timer and a countdown timer.
Every tool page has a short explanation, a worked example and answers to common questions.
How your data is handled
The tools are built to run inside your browser. The text, numbers and images you enter stay on your device and are not sent to my server. You can read the details in the Privacy Policy.
How I write and check each page
Each explanation says what the tool does, how to use it and how the result is calculated. I add an example with real numbers so you can check the method yourself.
When a tool depends on an official rule, such as a GST rate, I check the official source and note the date the rule took effect. Rules change, so please confirm important figures with the official source too.
Corrections and updates
Every page shows a “Last updated” date. If a result looks wrong or a page is out of date, write to me through the Contact Us page. I fix confirmed errors as soon as I can.
What the tools cannot do
Calculator results are estimates for planning. They are not financial, legal or tax advice. For an exact figure, check with your bank, your lender or a qualified professional.
Get in touch
You can report a problem, ask for a new tool or send feedback on the Contact Us page.
Official email: kailsh94136@gmail.com
Thank you for visiting Mubarak4u.