Free tools
Free study tools
Free calculators and study tools. They run in your browser, with no sign-in and no account, on a Chromebook, a Mac, a Windows PC or a phone.
Updated
Grades
- GPA calculatorFree GPA calculator. Enter letter grades and credits to get your unweighted and weighted GPA, for one term or cumulative, with every step of the math shown.
- Final grade calculatorFind the score you need on your final exam to get the grade you want, or see your grade if you get a given score. Free, instant, with the formula shown.
- Grade calculatorWork out your class grade from weighted categories like homework 20% and tests 50%. Enter percents or points; weights that do not add to 100 are handled.
Test scores
- ACT score calculatorWork out your ACT Composite from your English, math and reading scores, with the 2025 rule that leaves science out, plus your STEM score. Free, with the math.
- SAT to ACT conversionConvert an SAT total to an ACT Composite, or ACT to SAT, with the official 2018 ACT/SAT concordance tables from ACT and College Board. Full chart included.
- SAT superscore calculatorAdd your best SAT Reading and Writing and best Math scores from different test dates to get your superscore. Free, exact, and shows where each came from.
Study and writing
- Typing speed testFree typing test: 30 seconds, 1 minute or 2 minutes. Get net WPM, accuracy and the keys you miss most, on a Chromebook, a laptop or a phone. No sign-in.
- Pomodoro study timerA free Pomodoro study timer: 25 minutes of focus, 5 minute breaks, a long break every 4 blocks. Editable, keeps time in a background tab, with optional sound.
- Word counterCount words, characters, sentences and paragraphs, plus reading time. Check your text against the Common App 650 word limit or an X post's 280 characters.
Learn it with Ducky
DuckyHelper is a live voice tutor. You talk, Ducky sees your screen, explains, and shows you, step by step.
Free to start. The web app works in any browser, Chromebooks included; the Mac app can also draw on your real screen.
