Free study tools
A calculator, a grapher, a triangle solver, an equation balancer and a Python console. All of them run in your browser, all of them are free, and none of them need an account.
Math tools
- CalculatorA real scientific calculator with a tape of everything you typed.
- Graphing calculatorPlot any function, drag the view around, and read off the roots.
- Triangle solverSet the sides or the angles and watch it draw the triangle for you.
- Equation balancerBalance any reaction and get molar masses from the periodic table.
Writing tools
- Essay graderGraded against a real rubric, or reviewed with no score at all.
- Citation generatorAPA, MLA, Chicago and Harvard, with the in-text bracket included.
- Word counterWords, characters, sentences and reading time, live as you type.
- Grammar checkerEvery error listed with the fix and the rule behind it, no rewrite.
Study tools
- Worksheet graderPhotograph a finished worksheet and get it graded, line by line.
- Answer checkerShow your working and find out exactly where it went wrong.
- FlashcardsPaste your notes and study them as flashcards, right this minute.
- Quiz makerTurn your notes into a marked practice test you can take right now.