Ali Tools Express is a growing collection of free online calculators and tools for building projects, health, money, everyday maths and text. Our goal is simple: give you a fast, accurate answer, and show you exactly how it was worked out.
Who runs this site
Ali Tools Express is built and maintained by Ali Ahmed, a freelance full-stack developer. Ali builds websites and web applications for clients and started Ali Tools Express to create the kind of calculator site he wanted to use himself: quick to load, free of clutter, honest about its limits and clear about its maths.
What makes our tools different
- Every formula is shown. Each tool page explains the formula, defines each variable and works through real examples, so you can check the answer yourself.
- Sources are cited. Health, finance and construction tools link to the standards, guidelines or research their formulas come from.
- Your data stays with you. All calculations run in your browser. We do not store what you type into our tools.
- Fast on any connection. Pages are pre-built, lightweight and designed to load quickly even on slow mobile networks.
- Available in several languages. Translations are reviewed by fluent speakers before we publish them, and we use local units, currencies and examples.
How we keep tools accurate
Formulas are implemented in code with automated tests that check results against published reference values. When we find a mistake, we fix it, update the page’s “last updated” date and, for significant errors, note the change on the page. Read more on our How we calculate page.
Get in touch
Found an error, have a suggestion or want a new tool? Visit the contact page. We read every message.