Calculator24 is a free collection of online calculators for everyday money, date, land, health and education questions, built especially for people in Bangladesh and India.
What we do
We build simple, fast calculators that reflect local practice: lakh-and-crore number formatting, land units such as decimal, katha and bigha, Bangladesh board and UGC grading, government provident fund and pension rules, and the current tax slabs of both countries. Every calculator page explains the formula behind the result so you can understand — and check — the numbers.
How we keep results reliable
- Each calculator is tested against known worked examples before it is published.
- Where a result depends on a government rate or rule (tax slabs, provident fund rates, pension rules), the page states the rate used, where it came from and how to verify it.
- When we are not certain about a figure, we say so and let you enter your own value instead of guessing.
Your privacy
All calculations happen in your own browser. The numbers you enter are not sent to our server or stored. See our Privacy Policy for details.
Important note
Our results are estimates for general guidance. They are not financial, legal, tax or medical advice. Please read our Disclaimer.