# Free study tools

Canonical: https://duckyhelper.com/tools/
Updated: 2026-10-01

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.

## Grades

- [GPA calculator](https://duckyhelper.com/tools/gpa-calculator/): Free 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 calculator](https://duckyhelper.com/tools/final-grade-calculator/): Find 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 calculator](https://duckyhelper.com/tools/grade-calculator/): Work 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 calculator](https://duckyhelper.com/tools/act-score-calculator/): Work 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 conversion](https://duckyhelper.com/tools/sat-act-conversion/): Convert 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 calculator](https://duckyhelper.com/tools/sat-superscore-calculator/): Add 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 test](https://duckyhelper.com/tools/typing-speed-test/): Free 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 timer](https://duckyhelper.com/tools/study-timer/): A 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 counter](https://duckyhelper.com/tools/word-counter/): Count 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.

## Get DuckyHelper

Free to start. The web app works in any browser, Chromebooks included; the Mac app can also draw on your real screen. [Try it free in your browser](https://app.duckyhelper.com/?utm_source=duckyhelper.com&utm_medium=hub) or [Get the Mac app](https://duckyhelper.com/download/)