Paper sizes and types
Paper sizes and types: find the reference for your next project. Sheet dimensions and material uses. Weight conversion, folding symbols and starter guides.
Paper sizes, weights & learning
Paper sizes
Compare A4, Letter, envelopes & cards and convert dimensions.
Reference hubPaper types & weights
Choose origami paper, cardstock or tissue and convert gsm ↔ lb.
Reference hubLearn
Discover how paper is made, folding notation and craft traditions.
Reference hubGetting started guides
Prepare a square, read folding symbols or print a pattern.
Interactive calculatorGsm ↔ lb weight converter
Convert US basis weights (bond, text, cover, index) to grams per square metre.
210 × 297 mm vs 8.5 × 11 inA4 vs US Letter comparison
Compare A4 and Letter side by side at scale for printing templates and cutting origami squares.
Getting started guides
Print a paper pattern
Print at 100% and measure the check length before cutting your craft paper.
Starter guideRead the next fold
The dashed line shows where to crease. The arrow shows which part of the paper moves.
Starter guideStart with a square
For the first origami models, a 6 × 6 in square gives your fingers plenty of room.
Starter guideChoose paper for your project
Use thin sheets for folding and cutting, soft tissue for flowers, strips for quilling and card for box walls.