About ToolNimba

ToolNimba is a growing library of free online tools, calculators, unit converters and generators, built to be fast, accurate and genuinely useful. There are currently 1035 tools, with more added regularly.

Who writes this

Shihab Mia is the founder and editor of ToolNimba. He builds the free, in-browser calculators, converters and SEO and developer tools on this site and writes the guides that go with them. His focus is simple: tools that are accurate, fast and genuinely useful, with explanations that answer the question without the fluff. He works hands-on with search, web performance and the data behind each tool.

Every tool and guide on this site is built and edited under Shihab Mia. The goal is honest, hands-on work: tools that actually function, and explanations that answer the question without filler. We never publish invented statistics, fake sources or made-up credentials, and we cite a real source whenever a page makes a factual claim.

What we stand for

Accuracy first. Every calculation uses established formulas and internationally-defined constants, and we show the working so you can check it yourself. Where a topic affects your health or money, we add plain-language context and cite authoritative sources.

Privacy by design. Our tools run entirely in your browser. The numbers and text you enter are processed on your own device and are never uploaded, logged or sold.

No friction. No sign-up, no paywalls, no clutter between you and the answer.

How our content is made

Each tool pairs a working calculator with an explainer, worked examples, reference tables and FAQs. Pages are dated when they are last reviewed so you can see how current they are, and we revisit them as facts change. Found an error? We want to know, see the contact page.

A note on advice

Our health and finance tools are for general information and education only. They are not medical or financial advice. Always consult a qualified professional before making important decisions.