Your All-in-One
Micro-Tool Hub

Tooler Hub is a growing collection of free, browser-based utilities built for people who need a quick, reliable answer without downloading software or creating an account. What started as a single age calculator has grown into a suite of thirteen everyday tools spanning financial planning, health metrics, file conversion, developer workflows and accessibility. Every tool is designed around one idea: you should be able to land on the page, get your result in seconds, and move on with your day.

Our calculators are built on transparent, well-documented formulas rather than black-box estimates. The SIP calculator uses the standard compound-interest future-value formula used by fund houses, the BMI calculator follows World Health Organization category thresholds, and the age calculator accounts for leap years and varying month lengths so the result is exact to the day. Our converters and generators — QR codes, strong passwords, image compression, PDF and JPG conversion, cryptocurrency prices, text diffs, Markdown previews, short links and text-to-speech — follow the same principle of doing one job precisely and predictably.

Tooler Hub is independently built and maintained by Nitin Sharma. There are no paywalls, no usage caps, no watermarks on exported files, and no mandatory sign-up. A small number of clearly labelled advertisements keep hosting costs covered so the tools can stay free for everyone, including students, freelancers and small business owners who rely on them daily.

Privacy on Tooler Hub is not a policy paragraph — it is an architectural decision. The overwhelming majority of our utilities run entirely inside your own browser using client-side JavaScript. When you compress an image, convert a PDF into JPG pages, merge JPGs into a PDF, generate a QR code or create a password, the file and the data never leave your device. There is no upload step, no temporary server copy, and therefore nothing for us to store, inspect, leak or hand over.

This matters most for sensitive material. Scanned identity documents, medical reports, signed contracts, salary slips and private photographs are routinely run through online converters that quietly upload them to third-party servers. On Tooler Hub, the conversion happens in the same memory space as the web page you are looking at, and closing the tab discards everything. The same applies to generated passwords: they are produced by your browser's cryptographic random number generator and are never transmitted anywhere.

A few tools need the outside world to be useful. The cryptocurrency converter fetches live market prices from a public pricing API, and the text-to-speech tool uses the speech engine already installed in your operating system. Even then, we send only the minimum required — a currency pair, for example — and we never attach an identifier that ties a request back to you. Short links and tool history are saved in your browser's local storage on your own device, so clearing your browser data removes them permanently.

We do not require registration to use any tool, we do not sell data, and we do not build advertising profiles ourselves. Standard, aggregate analytics help us understand which tools are worth improving, and our advertising partner may use cookies as described in our Privacy Policy. Everything else stays on your machine.

Start from the search bar at the top of this page or from the grouped menus in the header. Calculators, File Utilities and Developer & Text Tools each open a short list, so you can reach any tool in two clicks. Every tool page is self-contained: inputs on the left or top, results updating live as you type, and an explanation of the formula or method used below the interface.

Calculators. Enter your date of birth to get an exact age breakdown in years, months and days. For SIP planning, provide a monthly contribution, an expected annual return and a time horizon to see invested capital versus projected wealth. For BMI, supply height and weight in metric or imperial units and read the resulting category against standard health ranges.

File utilities. Drag and drop an image to compress it, choose a quality level, and download the optimised file — useful for meeting upload size limits on job portals and government forms. PDF to JPG renders each page as a separate image, while JPG to PDF combines several photos into one ordered document, ideal for assembling scanned paperwork.

Developer and text tools. Paste two versions of a document into the Diff Checker to see added and removed lines highlighted side by side. Write in the Markdown Previewer to watch formatted output render as you type. Generate a password by setting length and character rules, shorten a URL with an optional custom alias, convert crypto values at live rates, or paste any passage into the text-to-speech tool and adjust voice, speed and pitch before listening.

Nothing needs to be installed, and every tool works on phones, tablets and desktops. If a utility you need is missing or a result looks wrong, the Feedback and Contact pages go straight to the developer — most suggestions are reviewed within a few days.