Paper size guide
Index Card Sizes
Index cards usually mean 3x5, 4x6, or 5x8 inch cards, with each size fitting a different study, recipe, or presentation workflow.
Quick facts
- Dimensions
- 3 × 5, 4 × 6, and 5 × 8 in · 76.2 × 127, 101.6 × 152.4, and 127 × 203.2 mm
- Also called
- 3x5 index card, 4x6 index card, 5x8 index card, note card size, flashcard size
- Best for
- flashcards and study prompts, recipe cards, filing labels, presentation notes
Overview
The most common index card sizes are 3 × 5, 4 × 6, and 5 × 8 inches. A 3x5 card is compact enough for vocabulary prompts and quick recall, while 4x6 gives more room for recipes, diagrams, and speaking notes. The larger 5x8 format works when one idea needs a fuller outline.
PaperGens focuses on printable card layouts that tile cards onto ordinary Letter sheets. That matters because many home printers handle Letter paper more reliably than individual card stock. Print the layout, cut along the guides, and use the finished cards for study, classroom games, labels, or filing.
Printable templates and hubs
Use these printable pages as the closest on-site destinations for this size, related workflow, or layout intent.
Index Cards 3x5 (Letter)
3x5 index cards layout on letter sized paper
Ruled Index Cards 3x5 (Letter)
3x5 ruled index cards on letter sized paper with a top guide line for study notes and flashcards.
Index Cards 4x6 (Letter)
Free printable index cards and 3x5 index cards on letter paper. Multiple sizes for notes, study, and flashcards. Download PDF at PaperGens.
other paper
Browse related printable templates and filters for this size cluster.
Supporting articles
Index Card Sizes: 3x5, 4x6, 5x8, Uses, and Printing
The standard index card size is 3x5 inches. Compare 3x5, 4x6, and 5x8 cards, metric sizes, best uses, Letter-sheet templates, and print settings.
Printing on Index Cards: 3x5, 4x6, and Letter Sheets
Print index cards without jams. Compare direct 3x5 and 4x6 card feed, Letter-sheet templates, scale settings, margins, cardstock, duplex, and test prints.
Common questions
- What is the standard index card size?
- The most common index card size is 3 × 5 inches, especially for compact study cards and flashcards.
- When should I use 4x6 index cards?
- Use 4x6 cards when a card needs more room for recipes, diagrams, speaking notes, or multi-step prompts.
- Can I print index cards on normal Letter paper?
- Yes. Printable index-card layouts place multiple cards on a Letter sheet so you can print, cut, and use them without feeding individual cards through the printer.