SB Link Tools is a free collection of online calculators, converters and utilities built and maintained by SB Link Network. We started it to give everyone fast, reliable tools that respect your privacy — no signup, no uploads, no tracking of what you type.
What we offer
Our tools cover the everyday needs of students, professionals, developers and small businesses:
- Finance — loan (EMI), compound interest, simple interest and percentage calculators.
- Text — word counter and case converter.
- Developer — JSON formatter, Base64 codec, password and UUID generators, regex tester.
- Image — compress, resize and convert images right in your browser.
- Health & utility — BMI, age and date-difference calculators.
- Webmaster — IP lookup, DNS lookup, meta tag generator and keyword density checker.
Why tools that run in your browser
Most of our tools run entirely on your device using JavaScript. That means your files and text are processed locally and never uploaded to a server. It makes the tools faster, and it keeps sensitive documents — personal photos, private drafts, financial figures — private.
Free and open to everyone
Every tool on this site is free to use, with no account required and no limits. The site is supported by advertising, which lets us keep everything free.
Our commitment
We keep the site fast, ad-light and easy to use. If a tool gives a wrong result or you would like to see a new tool added, please contact us — we read every message.