How to Import a Spreadsheet (CSV or Excel)

If you already have cards in Excel or Google Sheets, upload the file instead of typing everything again.

Column layout

Flashcards

Column A	Column B	Column C (optional)
Term / question	Definition / answer	Explanation

No header row required. Row 1 can be your first card.

Example:

"Mitochondria","Powerhouse of the cell","Produces ATP"
"Photosynthesis","Plants convert light to chemical energy",""

Quiz questions

Column A	Column B	Column C–E	Column F (optional)
Question	Correct answer	Wrong answers	Explanation

Column B is always the correct answer.

Example:

"What is 2+2?","4","3","5","6","Basic math"

Step-by-step

1. Open Import in the card editor.
2. Pick Flashcards or Quiz Questions.
3. Choose CSV / Excel.
4. Upload .csv, .xlsx, or .xls.
5. Preview loads in the editor. Fix any rows that look wrong.
6. Save to a folder.

Google Sheets workflow

1. File → Download → Comma Separated Values (.csv)
2. Upload that file in Nebulearn.

Or copy cells and use plain text import if you prefer pasting.

Excel tips

• Only the first worksheet is read. Put cards on sheet 1.
• Quote fields that contain commas: "Term, part 2","Definition"
• Extra columns beyond the layout are ignored.

Common issues

Wrong columns mapped

• Flashcards need at least two columns (term + definition).
• Quiz needs question + correct answer + at least one wrong answer.

Garbled characters

• Save CSV as UTF-8 from Excel if you see broken accents.

Empty import

• Check that the first sheet has data and you're not uploading a blank template.

After import

Edit vague cards before your first review. A 10-minute cleanup beats reviewing 200 sloppy cards.

Study technique: how to use flashcards effectively.