概要
Letter paper measures 8.5 × 11 inches and remains the default office and school format across North America. It is the page size most people mean when they say printer paper, copy paper, or standard notebook paper.
Letter is slightly wider and shorter than A4, three inches shorter than Legal, and twice the area of Half Letter. Those differences affect page boxes, binders, filing, and printer trays.
印刷用テンプレートとハブ
このサイズ、関連ワークフロー、またはレイアウト意図に近い内部ページとして、これらの印刷用ページを使えます。
レターペーパー
手紙用ヘッダー付き罫線紙
US 大学罫 (7.1mm)
無料印刷PDF。7.1mm（9/32インチ）行間のレター用罫線。大学ノート・罫線紙の検索に。
方眼紙 1/4インチ
レター用の無料印刷PDF。1/4インチ（約6.35mm）方眼。数学・製図・方眼紙の検索意図に対応。
Dot Grid 5mm
5mm dot grid, common for bullet journaling and planning
Lined & ruled paper
College ruled, wide ruled, legal pad layouts, and printable ruled sheets.
Notebook paper
Composition layouts, filler paper, loose leaf sheets, and note-friendly printable pages.
Graph & grid paper
Quarter-inch grids, engineering paper, coordinate planes, and specialty math layouts.
関連ガイド記事
8.5 x 11 用紙: Letter サイズの寸法と使いどころ
US Letter は 8.5 x 11 インチです。A4 との違い、印刷時の確認点、テンプレートを実寸で出す方法を整理します。
A4 と Letter はどちらを選ぶべきか
A4 と US Letter の違い、ISO と ANSI の関係、印刷時に拡大縮小トラブルを避ける方法を整理します。
Paper Sizes: ISO vs ANSI, Letter, Legal, A4, and 11x17
Compare ISO and North American paper sizes: A4, A3, Letter, Legal, Tabloid, Ledger, and 11x17. Choose the right size before exporting PDFs.
Printer Paper vs Copy Paper: What to Use for Templates
Compare printer paper, copy paper, and multipurpose paper for lined pages, graph paper, duplex packets, inkjet printing, laser printing, and everyday templates.
よくある質問
What size is Letter paper in inches?
Letter paper is 8.5 inches wide and 11 inches tall.
Is Letter paper the same as A4?
No. Letter is slightly wider and shorter than A4, so layouts can reflow or scale differently when you switch between them.
What is the difference between Letter and Legal paper?
Letter is 8.5 × 11 inches. Legal is 8.5 × 14 inches. They share the same width, but Legal is three inches taller.
When is Letter paper used instead of A4?
Letter is the everyday office and school format in the United States and Canada, while A4 is the common default in most ISO-paper regions.