Vortelio groups practical calculators and reference pages in one place: loans and tax estimates, sleep and pregnancy dates, developer helpers, and everyday conversions. Each tool is a static page. The calculation happens in your browser from the numbers you type.
What you can use it for
- Check a payment, a rate, or a take-home figure before you commit to it.
- Convert units, dates, and timestamps without sending the input anywhere.
- Look up a short reference — cron syntax, screen sizes, public API notes — and leave.
What it is not
Results are estimates for planning. Tax, salary, loan, health, and pregnancy tools use published formulas and rounded inputs. They are not a filing, a quote from a lender, or medical advice. Check the official source before you act on a number.
Reference pages summarize public information. Recalls, outages, prices, and grant notes can go out of date. Follow the source link on the page when one is shown.
How the site is built
Pages are static HTML, CSS, and JavaScript. There is no Vortelio account and no server that stores what you calculate. Your theme choice is saved in this browser under the key cc-theme. See the privacy notice for analytics and the terms for how to use the results.