Allcals started the way most useful things do: out of a personal annoyance. A couple of years back I needed to convert a recipe from cups to grams at eleven at night, and every "unit converter" I found online made me sit through a five-second ad, click past a cookie banner the size of my screen, and then wait for a page full of tracking scripts to finish loading before I could type in a single number. I closed about six tabs before I found one that just worked. That frustration is basically the entire reason this site exists.
I'm not a big company, and Allcals isn't backed by a marketing team or a boardroom. It's a small project — started by one developer and now maintained with the help of a couple of friends who care about the same things I do: pages that load fast, tools that do exactly what they say, and no unnecessary hoops between you and your answer. We're not trying to be the biggest calculator site on the internet. We're trying to be the one you don't have to think twice about using.
What we actually build
Right now, Allcals hosts a handful of everyday tools — an age calculator, a BMI calculator, a percentage calculator, a currency converter, a password generator, a QR code generator, a word counter, some basic PDF tools, a random number and name generator, and a general-purpose unit converter. None of these are flashy. That's on purpose. Most people who land on a calculator site aren't looking to be impressed; they're trying to get a number, finish a task, and move on with their day. So that's what we optimize for.
Wherever it's technically possible, the math happens directly in your browser using JavaScript, not on a server somewhere. Your height and weight for the BMI calculator, your birthdate for the age calculator, the text you paste into the word counter — none of it gets uploaded or stored by us. The one clear exception is the currency converter, which has to reach out to a public exchange-rate API to fetch live rates, because currency values change by the minute and there's no way to calculate that locally. We mention this upfront rather than burying it in fine print, because we'd rather you trust what we tell you than have to guess.
Why it's free
Running a website isn't free — hosting, a domain, the odd API subscription for things like live exchange rates, and the hours it takes to actually build and maintain each tool all cost something. We cover that through a small number of ads on the site, similar to most independent tool and reference sites. We've tried to keep the ad placement out of the way of the actual tools — you won't find pop-ups covering your results or auto-playing video ads hijacking your scroll. If you ever feel an ad is too intrusive or something looks broken, that's genuinely useful feedback for us, and you can tell us through the contact page.
How decisions get made around here
New tools usually get added because someone — often me, sometimes a visitor who emailed in — needed something and couldn't find a clean version of it elsewhere. That's also how the PDF tools and the random generator ended up on the site; they weren't part of some grand roadmap, they were things people kept asking for. If there's a tool you wish existed, or an existing one that's missing an obvious feature, the contact page is the fastest way to get that in front of us. We read everything that comes in, even if we can't always reply right away.
What we're not
We think it's worth being upfront about limits, too. Allcals is not a medical provider, and the BMI calculator or age calculator shouldn't be treated as health advice — they're quick reference tools, and anything related to your health is worth discussing with an actual clinician. We're not a financial institution either, and the currency converter is meant for quick reference, not for making investment or trading decisions. You can read more specifics on how we handle these caveats on our Disclaimer page.
Privacy and how we handle data
Because most tools run locally, there usually isn't much data to "handle" in the first place. Where things are different — like basic analytics to understand which tools are actually being used, or cookies set by our advertising partners — we've laid it out plainly on our Policy page rather than hiding it in dense legal language nobody reads. If you only read one other page on this site, make it that one.
Get in touch
Allcals is still growing, and it changes based on what people actually need, not on assumptions we make from behind a screen. If a tool gave you a wrong result, if something looked broken on your phone, or if you just want to say a converter saved you twenty minutes — we want to hear about it. Head over to our Contact Us page, and a real person (usually me) will read your message and get back to you.
Thanks for stopping by, and thanks for using a tool instead of doing that math by hand.