This page collects the most useful parts of Dk1.In in one place. Teachers, bloggers, forum moderators and community admins are welcome to link to any tool or guide, and nothing here requires registration.
Each category groups tools that solve related problems, so you can compare options and move between them quickly.
Count down the days, hours, minutes and seconds left to an exam, birthday, wedding or any event you choose.
Calculate milling recovery percentage, loss and profit from raw grain weight, finished product and by-products.
Check whether a number is prime and see its prime factors, next prime and previous prime.
Get YouTube Shorts title ideas, hook lines, a ready description, hashtags and channel bio ideas in Hinglish, English or Hindi. Copy in one tap.
Calculate your exact age in years, months, and days.
Check your Body Mass Index and weight category.
Calculate percentages, increases, and decreases instantly.
Calculate monthly EMI for home, car or personal loans.
Add or remove GST from any amount with Indian tax rates.
Calculate your SIP mutual fund returns and corpus.
Calculate total loan cost, EMI and interest payable.
Find the discounted price and savings on any item.
If a tool helped you, the simplest thanks is a link from a page where your readers would find it useful, for example a school worksheet, a finance blog post or a help article. Every tool page has a short, permanent address such as /tools/emi-calculator that will not change. Copy the snippet below or use the tool address directly.
We only ask for natural, editorial links. We do not buy, sell or exchange links and we do not use automated link tools.
When you reference a result in a report or article, mention the tool name, the inputs you used and the date, and link to the tool page. Results from calculators are estimates for learning and planning, so always confirm important figures with the relevant institution.
Want something added? Tell us which tool or guide you need.