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Paper Size Converter

A4 in inches · mm · pixels · Letter · Legal

Look up A4 size in inches, convert A4 paper dimensions in inches to millimeters and pixels, or compare A4 against US Letter and Legal — instantly, with no upload. Whether you need A4 sheet size in inch for a print brief or A4 page size in inch for a PDF template, the calculator shows mm, inches, and pixel dimensions at any DPI.

Also covers photocopy contexts: standard Xerox copier paper is A4 (8.27 × 11.69 in), while micro Xerox paper size typically refers to reduced A5 or A6 output. Select a size, set DPI, and read comparisons to every other format in the table below.

Millimeters

210 × 297 mm

Inches

8.268 × 11.693 in

Pixels @ 300 DPI

2480 × 3508 px

Compare to other sizes

SizeDimensions (mm)Δ widthΔ height
A3297 × 420+87 mm+123 mm
A5148 × 210-62 mm-87 mm
A6105 × 148-105 mm-149 mm
US Letter215.9 × 279.4+5.9 mm-17.6 mm
US Legal215.9 × 355.6+5.9 mm+58.6 mm
Tabloid / Ledger279.4 × 431.8+69.4 mm+134.8 mm
B4 (JIS)257 × 364+47 mm+67 mm
B5 (JIS)182 × 257-28 mm-40 mm

Mathematical / technical context

ISO 216 A-series: aspect ratio √2:1; halving the long edge steps down one size (A3 → A4 → A5).

inches = mm ÷ 25.4 · pixels = inches × DPI · A4 = 210 × 297 mm = 8.268 × 11.693 in

Step-by-step practical examples

A4 in inches: 210 ÷ 25.4 = 8.268 in wide; 297 ÷ 25.4 = 11.693 in tall — usually rounded to 8.27 × 11.69 in.

A4 at 300 DPI: 8.268 × 300 = 2,480 px wide; 11.693 × 300 = 3,508 px tall.

Micro Xerox (A5): 148 ÷ 25.4 = 5.83 in; 210 ÷ 25.4 = 8.27 in.

A4 & common paper sizes reference table

FromToResult
A4inches8.27 × 11.69 in
A4mm210 × 297 mm
A4cm21.0 × 29.7 cm
A4 @ 300 DPIpixels2480 × 3508 px
A4 @ 72 DPIpixels595 × 842 px
US Letterinches8.5 × 11 in
US Legalinches8.5 × 14 in
A5inches5.83 × 8.27 in
A3inches11.69 × 16.54 in
A6inches4.13 × 5.83 in
Tabloidinches11 × 17 in
A4 vs LetterΔ−0.23 in W, +0.69 in H

Complete guide to A4 size in inches

A4 size in inches — the standard answer

ISO A4 paper measures 210 × 297 millimeters. Converted to imperial units, A4 size in inches is 8.27 × 11.69 inches (more precisely 8.2677 × 11.6929 in). That single pair of numbers answers most searches — whether you type A4 paper size in inches, A4 inches, or simply need to know how wide an A4 sheet is in a US ruler.

The width is just under 8.5 inches; the height is just under 11.7 inches. A4 is therefore slightly narrower and slightly taller than US Letter (8.5 × 11 in). When a printer tray says "Letter," A4 will not fit perfectly without scaling — a common source of cropped margins in international offices.

Use the converter above to see exact values at your chosen DPI, toggle landscape orientation, and compare A4 against Letter, Legal, and Tabloid side by side.

A4 dimensions, measurements, and format — same size, different words

Search engines treat many phrases as the same intent. A4 dimensions in inches, A4 measurements in inches, and A4 format in inches all refer to the physical width and height of one ISO A-series sheet. "Format" emphasizes the standardized ratio; "dimensions" and "measurements" emphasize the numbers you write on a print spec.

People also search by object: A4 page in inches, A4 page size in inch, A4 paper in inch, A4 sheet in inches, A4 sheet size in inch, and A4 sheet dimensions in inches. A page, sheet, and piece of paper are the same thing here — one unfolded A4 rectangle at portrait orientation: 8.27 in wide × 11.69 in tall.

For completeness, A4 paper dimensions in inches is the most explicit phrasing designers use when building InDesign or Canva templates for export to PDF. Always specify portrait vs landscape; swapping width and height gives 11.69 × 8.27 in for landscape A4.

Why A4 uses millimeters but Americans think in inches

The ISO 216 standard defines A-series sizes in millimeters because the metric system integrates with the √2 aspect ratio: each step down (A0 → A1 → A2…) halves the area while keeping the same proportions. A4 is the everyday office size worldwide — except in the US and Canada, where Letter dominates.

Converting mm to inches uses the fixed factor 25.4 mm per inch:

width (in) = 210 ÷ 25.4 = 8.268 in · height (in) = 297 ÷ 25.4 = 11.693 in

Rounded to two decimals you get 8.27 × 11.69 — the figures printed on copier-paper packaging in India, Europe, and most of Asia. Some US listings incorrectly label A4 as 8.5 × 11 in; that is Letter, not A4. Trust 210 × 297 mm as the source of truth.

A4 vs US Letter — inches compared

Side-by-side in inches:

  • A4: 8.27 × 11.69 in (210 × 297 mm)
  • US Letter: 8.50 × 11.00 in (215.9 × 279.4 mm)
  • US Legal: 8.50 × 14.00 in (215.9 × 355.6 mm)

Letter is 0.23 in wider but 0.69 in shorter than A4. A one-page résumé designed on A4 will reflow when forced onto Letter, and vice versa. For cross-border PDFs, embed fonts and set the page size explicitly rather than relying on "fit to page" at print time.

Micro Xerox paper size and standard copy paper

In many countries "Xerox" is shorthand for photocopying, not just the brand. Standard Xerox copier paper sold for office machines is A4 — 210 × 297 mm (8.27 × 11.69 in). Ream labels often list both metric and imperial, though some Indian marketplaces mix A4 mm with Letter inch sizes on the same listing — verify the millimeter column.

Micro Xerox paper size usually means a reduced copy on smaller stock, not a separate ISO standard. Shops typically print two A5 pages per A4 sheet or run A6 for ID-card-sized output:

  • A5 (half A4): 148 × 210 mm ≈ 5.83 × 8.27 in
  • A6 (quarter A4): 105 × 148 mm ≈ 4.13 × 5.83 in

If a shop asks whether you want "full" or "micro" Xerox, full is almost always A4; micro is a scaled-down duplicate on A5 or A6. Select A5 in the converter above for micro-format dimensions in inches and pixels.

A4 at 72, 150, and 300 DPI — pixels from inches

Digital design converts inches to pixels with pixels = inches × DPI (dots per inch). At common print resolutions for A4 portrait:

  • 72 DPI (screen preview): 595 × 842 px
  • 150 DPI (draft print): 1,240 × 1,754 px
  • 300 DPI (quality print): 2,480 × 3,508 px

Enter any DPI in the tool to recalculate instantly. Web mockups often use 96 DPI; professional offset print expects 300 DPI for crisp text. The inch dimensions stay 8.27 × 11.69 regardless of DPI — only the pixel grid changes.

Related ISO A sizes in inches

A4 sits in the middle of the A-series. Neighbors help when scaling brochures or folding leaflets:

  • A3: 11.69 × 16.54 in — twice the area of A4
  • A5: 5.83 × 8.27 in — half of A4
  • B4 (JIS): 10.12 × 14.33 in — common in Japanese office equipment

Folding A4 once along the long edge yields two A5 panels — standard for booklets and event programs. Knowing inch equivalents avoids surprises when importing templates from metric-only publishers.

Practical tips for documents and printing

When creating PDFs for international audiences, set the page size to A4 (210 × 297 mm) in your word processor or design app — do not assume Letter. Export with embedded fonts so inch-to-mm rounding does not shift line breaks.

At the printer, choose the tray that matches physical paper. Loading A4 into a Letter-only tray causes skew or clipping. If you must print A4 content on Letter stock, scale to fit and expect wider side margins. For pixel-perfect work, design at 300 DPI using the exact dimensions above rather than rounded 8.3 × 11.7 shortcuts.

Detailed guide

Do not confuse A4 with Letter

Listing A4 as 8.5 × 11 in is wrong — that is Letter. Use 8.27 × 11.69 in or 210 × 297 mm for A4 templates and print specs.

Design at target DPI

Inch dimensions are fixed; pixel counts depend on DPI. Use 300 DPI for print-ready PDFs and 72–96 DPI for web previews only.

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Common questions

A4 paper size in inches — FAQ

What is A4 size in inches?

A4 is 8.27 × 11.69 inches (210 × 297 mm) in portrait orientation.

What is A4 paper size in inches?

The same: 8.27 in wide by 11.69 in tall. Width × height = 210 mm × 297 mm.

How many inches is an A4 sheet?

An A4 sheet measures approximately 8.27 inches by 11.69 inches — slightly narrower and taller than US Letter.

Is A4 the same as 8.5 × 11 inches?

No. 8.5 × 11 in is US Letter. A4 is 8.27 × 11.69 in — about 0.23 in narrower and 0.69 in taller.

What is micro Xerox paper size?

Micro Xerox usually means a reduced copy on A5 (5.83 × 8.27 in) or A6 (4.13 × 5.83 in). Standard Xerox/copy paper is A4.

What are A4 dimensions in mm and inches?

210 × 297 mm = 8.27 × 11.69 in. Divide mm by 25.4 to convert to inches.

How many pixels is A4 at 300 DPI?

2480 × 3508 pixels. Formula: (mm ÷ 25.4) × DPI for each dimension.

A4 vs Letter — which is bigger?

Letter is wider; A4 is taller. Letter area is slightly smaller overall but layouts are not interchangeable without reflow.

What envelope fits A4 without folding?

C4 envelope (229 × 324 mm) fits a flat A4 sheet.

Is data uploaded?

No. All conversions run locally in your browser.