Free online learning and practice tools
Practice tools and editors for study — typing speed, arithmetic drills and mathematical notation.
- Typing Speed TestA timed typing test with live words per minute, accuracy, and a per-key heatmap showing which keys cost you time. Runs entirely in your browser.
- Math DrillsTimed arithmetic practice you set up yourself: choose the operation, number range and how many problems, then get scored at the end. Free, no sign-up.
- Equation Editor — LaTeX to SVG, PNG and MathMLWrite LaTeX and get a rendered equation you can export as SVG, PNG or MathML — MathML pastes into Word as an editable equation. Runs in your browser.