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Turn your notes into a quiz with an answer key for every question

Upload a PDF, slide deck, text file or photo of a page. DeckOwl writes the questions and the correct answers, then explains why each answer is right.

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Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free · First set needs no signup · Creates quizzes in seconds

How the answer key gets built

A useful online quiz maker with answers does more than mark a choice as right or wrong. It should tie each correct answer back to the passage it came from, so you can see why it is correct and go back to the source if you are unsure.

Multiple choice, true/false and short answer questions from one upload
An explanation under every correct answer
Answers that stay tied to your own course material
Study in the browser on the free plan, with exports on paid plans

Example intro biology quiz questions with answers

Which organelle produces most of a cell's ATP?Mitochondria. They carry out cellular respiration, which converts glucose and oxygen into ATP.

True or false: DNA replication is semiconservative.True. Each new double helix keeps one original strand and gains one newly synthesized strand.

What is the net electrical charge of a neutron?Zero. Neutrons carry no charge, so they add mass to an atom without changing its charge.

Which molecule brings amino acids to the ribosome during translation?Transfer RNA (tRNA). Each tRNA matches a codon on mRNA through its anticodon.

In a cross of two AaBb parents, what fraction of offspring show both dominant traits?9/16. Independent assortment gives 3/4 for each dominant trait, and 3/4 times 3/4 equals 9/16.

Generate the full set

Three question types

Get multiple choice, true/false and short answer questions from the same material, so you can test recall in more than one way.

An explanation for every answer

Each correct answer comes with a short explanation, so a wrong guess becomes a lesson instead of a dead end.

Works from your own material

Questions come from your lecture notes or textbook chapter, not a generic question bank, so the quiz matches what your course covers.

How it works

Upload your material

Add a PDF, DOCX, PPTX, plain text file or a photo of a page. Photos are read with text recognition.

Choose the question types

Pick multiple choice, true/false, short answer or a mix, and set how many questions you want.

Take the quiz and check answers

Answer in the browser, then review the correct answer and its explanation for every question you missed.

DeckOwl reads your notes, picks out the key facts and writes questions with one correct answer and a short explanation. Free accounts get 3 generations per month and can study in the browser. Plus and Pro add exports for sharing or importing into other tools.

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Frequently asked questions

How many questions should a quiz on one lecture have?

Ten to twenty questions usually cover the main ideas of a single lecture without taking too long. Start shorter if the material is dense, then add questions on the topics you keep missing.

How do I study from quiz answers without just memorizing them?

Answer each question on paper before you check the key, so you have to retrieve the idea yourself. Then read the explanation and restate it in your own words, which builds understanding rather than recognition.

Is the quiz maker free to use?

The free plan includes 3 generations per month and lets you study in the browser. Exporting to files requires a paid plan.

Can I export quizzes to Moodle or QTI?

Moodle XML and QTI 2.1 export are on the Pro plan at $14.99/month. The Plus plan, at $39/year or $7.99/month, includes PDF, DOCX, Anki and CSV export.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.