About
is a free educational platform that makes the formulae shaping our world easy to find, easy to understand, and genuinely fun to explore.
Our mission
We believe that understanding the equations behind mathematics, physics, chemistry, engineering, finance and everyday life shouldn’t require expensive textbooks or endless searching. brings it all into one clean, fast, delightful place — whether you’re a student revising for exams, an engineer double-checking a calculation, or simply curious about how the world works.
Every formula is hand-authored with a clear explanation, a real worked example and a memorable fact — because a formula you understand is worth a hundred you’ve only memorised. And the library keeps growing, with new disciplines and tools added regularly.
1,500+ formulae
A vast, hand-authored library across 60+ disciplines — each with a worked example, difficulty badge and a fun fact.
Converters & calculators
Live unit, currency and duration converters plus a scientific calculator and handy everyday tools.
Practice & quizzes
Exam papers, quizzes and rapid-fire challenges to test and sharpen what you’ve learned.
Learning games
Nine free games — from formula crosswords to an abacus playground — that make learning genuinely fun.
Who built it
is a product of H Square Developments, based in the United Arab Emirates. It’s built by a small team that loves education, clean design and the quiet satisfaction of a formula that finally makes sense. Want to learn more about the story behind it? Visit the Makers page.
More from H Square Developments
Explore our other free learning platforms.