How to use

• Click any tool above to open it in a popup. Close with the × button or by clicking outside.
• Calculator: use the expression bar (e.g. 2*pi, sqrt(16)) and press Enter, or use the keypad. Timer & stopwatch for practice tests and study sessions; optional sound when countdown ends.
• Word counter shows words, characters, and reading time. Quick notes and Cornell notes support Markdown — use the Preview tab to see formatted notes.
• Convert length, weight, and temperature with the unit converter. Formula reference shows math in proper notation (algebra, geometry, physics, chemistry) with search.
• Make flashcards (keyboard: arrows to move, Space to flip). Pomodoro timer plays a sound when focus or break ends. Track tasks with the study checklist.
• GPA calculator includes a bar chart of your grades. Generate MLA/APA citations, do math practice (accepts decimals and simple expressions), and use the final grade calculator.
• Take a typing test or solve quadratic equations (results shown in math notation). All tools run in your browser and work offline after the first load.