About Free Handy Tools
Free Handy Tools is 32 small calculators and converters for the awkward sums that come up at work and at home — a timesheet with unpaid breaks in it, a mortgage that compounds twice a year rather than twelve times, a shoe size written in another country’s numbering.
What it is
Every tool here does one job and states its assumptions while it does it. The Time Card Calculator shows where the overtime threshold was applied and how much of the week fell the other side of it. The Mortgage Calculator asks whether you want US monthly compounding or Canadian semi-annual compounding, because the same rate on the same loan produces two different payments. The Cooking Measurement Converter asks which ingredient you are measuring, because a cup of flour and a cup of water do not weigh the same thing.
That is the whole editorial position. Most free calculators are right about the easy case and quietly wrong about the details, and the details are usually the reason you went looking for a calculator. These try to be right about the details, and to show enough of the working that you can check the answer rather than take it on trust.
The catalogue is grouped into 6 areas — Work & Money, Text, Developer, General, Date & Time, Conversions — and every tool is listed on the home page. There is no tool behind a login, because there are no logins.
How it works
The site is a static React application. There is no server-side calculation anywhere in it: when you type a number into a tool, the arithmetic runs in JavaScript on your own device, and the result never leaves it. There is no database, no account system, no sign-up and nothing to install. Open a tool, disconnect from the network, and it keeps working.
Each route is pre-rendered to a real HTML file at build time — its own title, its own description, its own canonical URL — so the pages are readable and indexable without running any JavaScript at all. The finished files are served as static assets. Nothing is generated per visitor, which is also why there is nothing per visitor to store.
The practical consequence: we could not hand over what you typed into the Password Generator or the JSON Formatter even if someone asked us to, because it was never sent anywhere. The privacy policy sets out the few things that do leave your browser, all of which are the ordinary mechanics of loading a web page.
Why it is free
There is no paid tier and no plan for one. The site is funded by advertising, which is what keeps it free and account-free. That arrangement comes with rules we hold ourselves to:
- Ads go below the tool, never above it and never inside it. The tool is what you came for and it loads first.
- Every ad space is sized in the stylesheet before the ad arrives, so nothing on the page moves under your cursor while you are typing.
- If an ad does not load — blocked, failed, or simply unsold — the space collapses instead of sitting there as an empty grey rectangle.
- No pop-ups, no full-screen interstitials between pages, and no ads that follow you down the page.
- No advertiser has ever influenced a result. Nobody can pay to change what a calculator returns, or to be recommended by one.
Who runs it
Free Handy Tools is built and maintained by one person. Corrections, feature requests, complaints and advertising enquiries all arrive in the same inbox: asad.saad1984@gmail.com.
If a tool gives you a number you can show is wrong, that is the single most useful message you can send. Include the tool, the exact inputs you used, the answer it gave and the answer you expected — see the contact page for the full list. Wrong answers get fixed ahead of everything else.