LaTeX formula editor
Write and render physics, chemistry and maths formulas live in the browser, with the real formulas from the Quanta library.
Inline (in body text)
We have: one of the fundamental equations of the STEM sciences.
Don't just write formulas, understand them
With Quanta you learn formulas from physics, chemistry and maths with the FSRS algorithm. Create flashcards directly from the LaTeX editor.
- TU Dresden
- Humboldt-Universität zu Berlin
- HTW Dresden
- Fachhochschule Dresden
- Universität Leipzig
- HTWK Leipzig
- Freie Universität Berlin
- IU Internationale Hochschule
- FernUniversität in Hagen
From the Quanta formula sheet
KaTeX rendering
Industry standard, the same renderer used by Wikipedia, Khan Academy and Quanta.
Import into flashcards
Bring formulas straight into Quanta flashcards and learn them with FSRS.
PNG export
Download the formula as a high-resolution PNG, drop it straight into flashcards, presentations or documents.
What is a LaTeX editor?
LaTeX is the standard format for mathematical and scientific formulas, used by universities, research institutes and technical publications worldwide. An online LaTeX editor lets you write formulas like E = mc^2, the Schrödinger equation or integrals directly in the browser and see them rendered instantly.
Which subjects is the Quanta LaTeX editor suited for?
The Quanta LaTeX editor includes quick-insert buttons for physics (Newton's laws, electrodynamics, quantum mechanics), chemistry (Gibbs energy, Henderson-Hasselbalch, Nernst equation), mathematics (integrals, sums, derivatives) and biology (enzyme kinetics). All 50+ formulas from the Quanta library are available as one-click examples.
How do I export LaTeX formulas?
You can download the rendered formula as a PNG (high resolution, @2x for retina displays) or copy the LaTeX code directly. Alternatively, paste it into Quanta flashcards to learn the formula efficiently with the FSRS algorithm.
Three formulas from the formula sheet and their source
Copy a line into the editor field. The third column names the spot where typing usually costs the most time.
| Formula | LaTeX source | Where the typing trips you up |
|---|---|---|
| Newton's Second Law | F = m \cdot a | The multiplication dot is \cdot. An asterisk in LaTeX sets an asterisk, not a multiplication sign, and a bare x is typeset as a variable. |
| Gibbs Energy (Free Enthalpy) | \Delta G = \Delta H - T \cdot \Delta S | Case decides the character: \Delta gives the triangle, \delta the lower-case Greek letter. The same holds for \Sigma and \sigma. |
| Taylor Series | f(x) = \sum_{n=0}^{\infty} \frac{f^{(n)}(a)}{n!} (x-a)^n | Curly braces group and are not typeset. \sum_{n=0}^{\infty} binds the lower and upper limit to the sum sign; without braces only the first character moves there. |
Where the editor stops
Four points you are better off knowing beforehand.
- KaTeX is a renderer for mathematical typesetting, not a TeX distribution. Drawings with tikzpicture, figures, bibliographies and page breaks belong in a full LaTeX setup, not here.
- The editor shows one formula at a time. For a whole problem sheet it is the wrong tool.
- Flashcards are only built from a formula that exists in the Quanta formula sheet. A formula you typed freely has no description, units, application or source behind it, and without those the back would be empty.
- Rendering happens in the browser. What you type into the field is not sent to a server.
From the formula to a flashcard
With a formula from the formula sheet in the field, you get a whole study block instead of a single flashcard. Newton's Second Law yields 10 flashcards: the formula itself, its units, one card per variable, plus its application, a worked example, its range of validity, its derivation and a rearrangement for another quantity.
The formula sheet behind the editor holds 133 formulas from physics, chemistry, maths and biology, each with a source and a worked example. The flashcards are then studied with FSRS-6 (Ye et al. 2022, ACM SIGKDD).
Frequently asked questions
Can I write LaTeX equations online for free?
Which LaTeX commands are supported?
How do I write a LaTeX formula online?
Do I need to install LaTeX?
Can I turn a formula into flashcards?
The other two tools
Both also run in the browser and both also work without an account.
- Structural formula generator
SMILES to a 2D structural formula, with compound search and PNG export. Works on a phone too.
- 3D molecule builder
Place atoms, draw bonds, rotate in the 3D view. Needs a window of at least 1024 pixels.
- Formula sheet
The collection behind the editor, every formula with its source and a worked example.