Type formulas the way you would write them by hand. See them rendered as textbook-quality LaTeX. Get real numeric answers with real units. Every formula you keep stays in your personal book, ready to reuse the next time the same problem comes up.
No credit card. Nothing to install. Your book is saved to your account.
Calculators forget everything the moment you close them. LaTeX documents look beautiful but can’t compute a value. My Equation Book does both.
Type sigma_f or pderiv(psi, t). Greek letters and subscripts render as you type. Fractions, radicals, and integrals typeset in display style.
Enter values like 12 V or 4 ohm. Ohm's law returns amps. Units propagate through the whole expression automatically.
Name one equation and use it as a variable in another. Change a single input and every downstream result updates.
Organize your work into pages — one per class, one per project, one per lab. Duplicate, rename, or reorder as your notebook grows.
One click drops the rendered LaTeX source onto your clipboard, ready to paste into a report or thesis. Numerical form available too.
A minimalist near-black theme by default. Toggle to light whenever your eyes prefer it. Preference persists to your account.
Nothing to install. Your book is ready in seconds.
Create your book