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ISO A/B/C, US, Envelopes, Books & International Standards – ChinaBestPrinting
ChinaBestPrinting · Paper Size Reference
Explore dimensions, conversions, and uses for A, B, C series, US Letter, Legal, Envelope sizes and more.
At ChinaBestPrinting, we know the right paper size is critical for printing, publishing and packaging. This page is a comprehensive, professional reference covering worldwide standards with precise dimensions in millimeters and inches, helping you choose the correct format with confidence.
A, B, C series with exact sizes (e.g., A0–A10, B0–B10, C0–C10). Consistent aspect ratios for printing and layout.
Letter, Legal, Ledger/Tabloid, plus US and International envelope formats for mailing and fulfillment.
Books, Business Cards, Photography, Newspapers, RAW and Billboard sizes for real production scenarios.
French, Japanese, Canadian, German, Swedish, Colombian, Chinese, Imperial, Traditional British, Transitional.
Need guidance or custom specs? ChinaBestPrinting delivers professional book, packaging, and commercial printing—aligned to these standards.
Pick a paper size, choose an output unit, and get instant conversions (mm, in, pt, or pixels at preset PPIs).
Values are rounded; small differences may occur.
A practical guide to the ISO 216 A-series: exact dimensions from A0 to A10, oversize 4A0/2A0 and common A3+. Includes a quick converter (mm, inches, points, pixels at preset PPIs), a table of sizes with the constant 1:√2 aspect ratio, manufacturing tolerances, RA/SRA untrimmed sheet context, and copier scaling shortcuts (70.7% / 141.4%).
A practical reference to the ISO 216 B-series: sizes B0 through B13 with the same 1:√2 ratio, defined so each B(n) has area equal to the geometric mean of A(n) and A(n–1). Includes a fast mm↔in/pt/px converter, a full dimension table, manufacturing tolerances, typical uses (posters, books, passports), and common oversize/uncut formats such as B0+/B1+/B2+, RB, and SRB.
A complete reference to the ISO 269 C-series: dimensions from C0 to C10, how C-sizes sit between A and B of the same number, and why the 1:√2 ratio ensures neat folding and predictable scaling. Includes a fast mm↔in/pt/px converter, a fit guide (A4→C4, A5→C5, A6→C6), common business choices, DL clarification, and manufacturing tolerance notes.
A practical reference to the North American paper system: common office sizes (Letter, Legal, Tabloid/Ledger), the ANSI drawing series (A–E), and ARCH sizes used in architecture. Includes an instant converter (mm, cm, in, pt, and pixels at preset PPIs), comprehensive dimension tables with aspect ratios, a US–ISO comparison, and notes on Super B (13×19 in) and cross-market workflow tips.
A practical guide to US envelope families: Commercial (office mailers like the ubiquitous #10 and Monarch), Announcement A-style (A-1 to A-10 and A-Long for invitations and photo cards), and Catalog (center-seam envelopes for thicker inserts). The page includes a converter for inches, millimeters, points, and pixels at preset PPIs, rounded display tables, and usage notes covering inserts, flap/seal options, and USPS automation considerations.
This page catalogs international (ISO) envelope sizes centered on the C-series, which is proportioned for ISO 216 A-series paper (same 1:√2 aspect). It explains the fit mapping (Aⁿ → Cⁿ; one fold → next size down) with common office picks like C4 for A4 (unfolded), C5 for A4 once-folded, and C6 for A4 twice-folded. DL (a DIN-origin business size) is also covered for A4 tri-fold letters. A built-in converter outputs mm, inches, points, and pixels at preset PPIs, and the tables include additional formats (B-, E-, S-, CE- variants).
This page catalogs popular photography paper sizes from 2R through 16R, plus Super (S) variants that preserve a 3:2 ratio for 35 mm images. It maps Japanese labels (L ↔ 3R, 2L ↔ 5R, KG ↔ 4R), covers studio standards like 8×10 and 11×14, and includes A3+ (13×19) for desktop inkjet. You’ll find aspect-ratio guidance (3:2, 4:3, 5:4, 1:1, √2), lab naming quirks, and practical printing tips.
This page catalogs the most used newspaper formats—Broadsheet, Berliner (Midi), and Tabloid/Compact—along with regional standards such as Nordisch, Rhenish, and Swiss. It includes quick reference dimensions in millimetres and inches (with exact conversion at 1 in = 25.4 mm) and notable title examples (e.g., The New York Times, The Wall Street Journal). An integrated converter outputs mm, in, pt, and pixels at common PPIs to simplify ad specs, page templates, and press-ready layouts.
Explore historical and modern book sizes—Folio, Quarto, Octavo, and trade A/B/C formats—alongside a quick converter for mm, inches, points, and pixels. Includes a handy table of dimensions and aspect ratios plus guidance on specifying leaf vs. cover measurements and allowing for finishing tolerances.
This page lists common business card formats—US/Canada 3.5×2 in, EU 85×55 mm, Japan 91×55, and ISO 7810 ID-1 85.6×54—alongside a quick converter for millimetres, inches, points, and pixels at preset PPIs. It includes a size/ratio table and practical notes on bleed, safe zones, corner radius, and QR-code legibility.
Raw paper formats are defined in ISO 217 and come in two primary families: RA (Raw Format A) and SRA (Supplementary Raw Format A). They are intentionally a little larger than ISO 216 A-series sheets so printers can include bleed, grip margins, marks, and finishing tolerances, then trim to the final A size. This page lists RA0–RA4, SRA0–SRA4 plus extended trims (SRA1+, SRA2+, SRA3, SRA3+, SRA3++) and the A-U oversize set (A0U–A4U), with dimensions in millimetres and inches and an instant converter for mm, in, pt, picas, and pixels at common PPIs.
Billboard (hoarding) sizes retain historic ‘sheet’ names from multi-panel paste-ups. This page lists common standards—from 1 Sheet (20×30 in / 508×762 mm) up to 96 Sheet (480×120 in / 40×10 ft)—and includes the widely used highway Bulletin at 48×14 ft. Use the converter to get exact mm, inches, points, and pixels at preset PPIs for art setup, proofs, and plant specs.
France adopted ISO 216 in 1967, but earlier AFNOR (1926) formats—named via mill watermarks—are still used for artisanal and heritage printing. This page lists common sizes (e.g., Cloche 300×400 mm, Raisin 500×650 mm, Double Raisin 650×1000 mm, Jésus 560×760 mm, Soleil 600×800 mm, Colombier 630×900 mm, Grand Aigle 750×1050 mm, Grand Monde 900×1260 mm, Univers 1000×1130 mm) and provides an instant converter for mm, inches, points, and pixels at preset PPIs.
Japan uses JIS A (dimensionally the same as ISO A) and JIS B (larger than ISO B because each sheet has 1.5× the area of the corresponding A size) while preserving the 1:√2 aspect ratio. In addition, printers use legacy Shiroku-ban and Kiku cuts. This page lists JB0–JB12, Shiroku-ban, and Kiku dimensions and includes a converter for mm, inches, points, and pixels at preset PPIs.
Canada’s P-series (CAN 2-9.60M) defined paper sizes P1–P6 by metric-rounding U.S. ANSI formats to simple millimeter values. The series does not keep a constant 1:√2 ratio, so scaling between sizes changes margins. P-sizes are largely obsolete today; Canadian workflows typically use ANSI (Letter/Legal/Tabloid) or ISO 216 A-series depending on the sector.
Published in 1922, DIN 476 defined the modern A, B, and C paper series using the 1:√2 ratio. In 1991 it was split into DIN 476-1 (A/B) and DIN 476-2 (C envelopes). DIN 476-1 was withdrawn in 2002 in favor of DIN EN ISO 216, while DIN 476-2 (envelopes) remains current with a 2008 update. Historic references also include a D series (D0–D8), which did not persist in common practice.
SIS 01 47 11 extended ISO 216 by inserting D, E, F, and G series between A, B, and C so that sizes progress by a constant scale factor (e.g., A4 → E4 → C4 → G4 → B4 → F4 → D4 → A3). Although influential locally, the extension was withdrawn and is not part of current international standards; today most work uses ISO A/B/C, with E5 and G5 persisting for dissertations in some contexts.
In Colombia, the pliego press sheet—aligned to ISO B1 (~707 × 1000 mm; often worked as 700 × 1000 mm)—anchors commercial printing. Production sizes are specified as simple fractions (1/2, 1/4, 1/8 pliego) chosen to optimize imposition, grain, and trim. For office/admin documents, Carta (216 × 279), Oficio (216 × 330), and Extra Tabloide (304 × 457) are common and may be listed alongside pliego fractions on job specs.
GB/T 148-1997 documents ISO A/B/C formats for interoperability in China and also recognizes a homegrown Chinese D series used historically in publishing and printing. The D ladder (D0–D6) holds an aspect ratio near √2 and follows a clear progression rule, while the RD ladder (RD0–RD6) derives from the 787 × 1092 mm press sheet. The page includes a unit-flexible converter (mm, cm, in, pt, and pixels at preset PPIs) and tables for quick reference.
Before ISO 216, UK printers used large, named parent sheets—Royal, Demy, Crown, Elephant, Antiquarian, and more—then folded them into formats such as Folio, Quarto, and Octavo. Sizes varied slightly by mill and practice, so values are nominal. This page lists common Imperial sheets with mm/in equivalents, explains folding-to-format, and includes a converter for mm, cm, inches, points, and pixels at common PPIs.
Before ISO 216, British printing used named, fold-derived formats. This page lists common trim targets—Dukes (≈140×178 mm), Kings (≈165×203 mm), Foolscap (≈203×330 mm), Imperial (≈178×229 mm), and Quarto (≈203×254 mm)—and explains that these names primarily indicate folding from a parent sheet (e.g., Foolscap) rather than a single fixed size. Includes a converter for mm, cm, inches, points, and pixels at common PPIs.
“Transitional” formats improve cross-region printing without expanding ISO’s core set. The PA series (proposed in 1975 but not adopted) includes PA4/L4 at 210×280 mm—A4 width with a 280 mm height—printing cleanly across A4 and US Letter devices and mapping to 4:3 in landscape. The regional F series is widely used in Southeast Asia; F4 is 210×330 mm (A4 width with a longer foolscap-like height) and is common for forms and legal paperwork. Page includes mm/in tables for PA0–PA10 and F0–F10 plus practical guidance for templates, scaling, and archiving.