About Calc and Measure

Calc and Measure is a small, independently run site with one job: give you a fast, accurate answer to a everyday math or conversion question without making you sign up, install anything, or dig through a cluttered page to find it.

It was built because so many calculator sites bury a simple tool under walls of ads, autoplay video, and pop-ups before you can even see the input field. Every tool here loads quickly, works on a phone as well as a desktop, and explains the formula behind the answer in plain language, so you can check the math yourself or learn something along the way.

The site covers ten tools split into two groups: everyday calculators (age, days between dates, percentages, tips, and GPA) and converters (units, shoe sizes, ring sizes, clothing sizes, and cooking measurements). All of them run directly in your browser. No data you enter is sent to a server or stored anywhere.

The site is supported by display advertising, which is what keeps every tool free to use and free of accounts. You can read more about how that works in the Privacy Policy.

Found an error in a formula or a reference table, or have an idea for a tool that should be added? Get in touch on the Contact page.