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Study tools and clear answers for the homework you actually have.

Work out your GPA, format an APA citation, time a study session or quiz yourself on world capitals. 23 free tools, six quiz subjects and plain-English articles on science, history and geography.

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Popular: GPA Calculator Citation Generator Word Counter Pomodoro Timer

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Focus timer

25:00

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Citation

Smith, J. A. (2024). How photosynthesis works. Science Today.

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01

Math & Grades

GPA, final-exam targets, percentages and fractions.

GPA Calculator Semester GPA on the 4.0 scale. CGPA Calculator Combine semesters into a cumulative GPA. Percentage Calculator Marks to percent, percent of, percent change. Grade Calculator Weighted grade and the final score you need. Fraction Calculator Add, subtract, multiply, divide, with steps.
02

Study & Focus

Timers, planners and counters for getting the work done.

Pomodoro Timer 25-minute focus blocks with breaks. Study Planner A daily plan you can tick off. Exam Countdown Days, hours and minutes to each exam. Reading Time Calculator Reading and speaking time for any text. Word Counter Words, characters, sentences, keywords.
03

Writing & Research

Citations, readability, text case and flashcards.

Citation Generator APA 7 and MLA 9 for sites, books, journals. Text Case Converter Title, sentence, UPPER, camelCase and more. Readability Checker Flesch score and grade level. Flashcard Maker Make a deck, flip through it.
04

Quizzes & Trivia

Ten-question quizzes on every subject and a random question machine.

General Knowledge Quiz Ten questions across six subjects. Science Quiz Space, chemistry and the human body. Random Question Generator One trivia question per click. World Geography Quiz Capitals and countries worldwide. History Quiz Presidents, empires, wars and inventions. Math Quiz Mental math, geometry and number facts. Technology Quiz Computers, the internet and inventors.
05

Science & Units

A scientific calculator and a unit converter.

Scientific Calculator Trig, logs, powers, roots, factorials. Unit Converter Length, weight, temperature, speed, data.

Subjects

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Short, clear explanations of the questions that come up in class, each paired with a quiz to check what stuck. All subjects

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Ten questions. See how you do.

Multiple choice, instant feedback, and a list of the ones you missed at the end.

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Articles

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Study guides

Study habits that hold up during finals week

Practical advice on focus, memory and planning, written for real student schedules.

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  1. How to Study Effectively: 7 Techniques That Actually Work
  2. How to study when you keep getting distracted Coming soon
  3. Active recall and spaced repetition, explained Coming soon
  4. A two-week plan for finals Coming soon
  5. Time management for students with a job Coming soon

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