About HIFreeTools
Last updated:
HIFreeTools is an independent project that builds free, practical online tools — the kind of small utility you search for, use once, and want to actually work the first time.
Who runs HIFreeTools
HIFreeTools is an independent project, built and maintained by a solo software developer based in South Korea. It is not backed by a large company — which is exactly why each tool is built to genuinely work and is held to the standards below, rather than mass-produced. If you have a question about how a specific tool calculates its result, or you spot something wrong, you can reach the person responsible directly at [email protected]. How tools are built, reviewed, and corrected is described in our Calculation Methodology, Editorial Policy, and Correction Policy.
What we do
We make calculators, converters, text and developer utilities, and random pickers that solve everyday problems instantly. Every tool is free, needs no account, and — wherever it’s technically possible — runs entirely inside your browser so your data never leaves your device.
What makes us different
Plenty of “free tool” sites publish thin pages that don’t really work or bury a tiny calculator under a wall of filler. We hold ourselves to a different bar:
- Every tool works. We don’t publish “coming soon” pages or tools that only pretend to compute something.
- We show our work. Each tool states the formula or method it uses, with worked examples you can check by hand.
- The tool comes first. The actual calculator is never buried under pop-ups or sign-up walls, and we never disguise ads as buttons or results.
- Honesty on hard topics. Anything touching money, health, legal, or tax is clearly labeled as an estimate, never advice.
How our tools work
Most tools are processed locally in your browser using standard web technology — nothing you type is uploaded. A small number of future tools may need server processing (for example, certain file conversions); when that’s the case, we say so on the tool’s page and delete uploaded files promptly. See our Privacy Policy and Calculation Methodology for details.
How we keep the lights on
HIFreeTools is free to use. We plan to support the site with advertising once it is established, placed so that it never interferes with using a tool. We never disguise ads as buttons or results. Read our Advertising Policy for the rules we follow.
Contact
Found a bug, a wrong result, or have a tool to suggest? We want to know. Visit our contact page or email [email protected].