Paper sizes on Android can be looked up in a browser tab using a free chart that lists every standard A series, B series, and US sheet in millimetres, centimetres, and inches, with a built-in converter that turns any size into exact pixels at any DPI. The chart is laid out as a quick reference table for mobile screens, so you can scroll to the format you need and read off the dimension without installing another app. Because it runs locally in the browser, nothing leaves the phone or tablet and no account is required, which is useful when you are working away from a laptop and just need to confirm whether A4 is wider than Letter or how many pixels wide a poster export should be. The same lookup also handles the digital side of the question, since picking a paper size and a DPI produces the exact pixel width and height to drop into a canvas, an image export, or a printer dialog on the device. For most Android workflows the practical question is not just the physical size but the pixel size at the resolution you plan to print or share, so the chart pairs the reference table with a live converter that updates the pixel count as soon as you change the DPI field. Open the Paper Sizes Chart in any mobile browser and the reference table loads immediately alongside the converter.
Finding Paper Sizes on an Android Phone or Tablet
Most Android phones and tablets ship with a browser that can open any web tool directly, so a paper size chart does not need a separate app download or a sign-up step. Opening the chart in Chrome, Samsung Internet, Firefox, Brave, or any other mobile browser loads the full reference table in one screen-friendly layout, and the converter sits underneath or beside it depending on your screen size and orientation. Because the chart runs locally, you can reopen it from the browser history even on a slow connection, and you can bookmark it for the next time you need to confirm a sheet dimension while working on a document. The mobile layout keeps the millimetre, centimetre, and inch columns visible at the same time, so you do not have to flip between views to compare units. A second useful habit is to add the chart to the Android home screen as a shortcut, which gives you the same one-tap access you would have with a downloaded tool without giving up storage space or battery in the background.
Common Paper Sizes Android Users Look Up
Mobile workflows tend to circle around a small set of formats. Email attachments and Google Docs default to A4 in most regions, US Letter is the default in North America, A5 and A6 show up for handouts, invitations, and folded brochures, and Legal or Tabloid sizes appear for contracts, spreadsheets, and posters. Knowing these dimensions at a glance saves time when you are setting up a print job from your phone or resizing an image to send to a wireless printer. The reference table covers the full A series from A0 down to A10, the B series from B0 down, and the standard US sizes, with dimensions listed in millimetres and inches for each entry.
| Format | Group | mm | Inches |
|---|---|---|---|
| A5 | A series (ISO 216) | 148 × 210 | 5.83 × 8.27 |
| A4 | A series (ISO 216) | 210 × 297 | 8.27 × 11.69 |
| A3 | A series (ISO 216) | 297 × 420 | 11.69 × 16.54 |
| A2 | A series (ISO 216) | 420 × 594 | 16.54 × 23.39 |
| B5 | B series (ISO 216) | 176 × 250 | 6.93 × 9.84 |
| US Letter | US (ANSI) | 215.9 × 279.4 | 8.5 × 11 |
| US Legal | US (ANSI) | 215.9 × 355.6 | 8.5 × 14 |
| Tabloid / Ledger | US (ANSI) | 279.4 × 431.8 | 11 × 17 |
How to Look Up a Paper Size and Convert to Pixels on Android
On an Android phone or tablet, the fastest way to find a paper size and turn it into pixels is to use the chart in your mobile browser.
- Open the paper size chart in your browser and scroll the reference table to find your format in the A series, B series, or US group; the dimensions are listed side by side in millimetres, centimetres, and inches.
- In the converter section, tap the paper size dropdown and pick the format you need, such as A4 or US Letter, so the exact dimensions load into the converter fields.
- Tap the DPI field and type the resolution that matches your output: 300 for high-quality print, 150 for everyday print or shared PDFs, or 72 for on-screen viewing.
- Read the pixel width and height that appear next to the millimetre, centimetre, and inch values, then drop those numbers into your canvas size, export dialog, or printer setup on the phone.
Converting Paper Sizes to Pixels on Android
Pixel size is not a property of the paper itself; it depends entirely on the resolution you choose. DPI, short for dots per inch, is the bridge between physical inches and digital pixels: pixel width equals width in inches multiplied by the DPI, rounded to a whole pixel. For a single worked example, take A4 at 300 DPI, which is the standard for high-quality print. The width in inches is 210 divided by 25.4, which is about 8.2677 inches. Multiplying 8.2677 by 300 gives about 2480.31, which rounds to 2480 pixels wide. The height follows the same step: 297 divided by 25.4 is about 11.6929 inches, times 300 is about 3507.87, which rounds to 3508 pixels tall. At 72 DPI instead, the same A4 sheet comes out at about 595 by 842 pixels, which is fine for on-screen viewing but too small for a sharp print. The converter on the chart performs this arithmetic for any size and any DPI as soon as you change the field, so you can switch between print and screen resolutions without redoing the math by hand.
Using Paper Sizes When Printing from Android
Android printing usually goes through the system print dialog, which lets you pick a paper size before sending the job to a Wi-Fi or network printer. The catch is that the dropdown is only useful if you already know which size your printer tray is loaded with, which is where the chart helps you confirm whether you need A4, Letter, Legal, or a smaller format like A5 or A6. When you are printing an image rather than a document, the print dialog also offers a Fit to Page option that scales the picture to the chosen sheet, but knowing the pixel size of your source image tells you whether the print will look sharp or slightly soft at the requested size. A quick rule of thumb: an image needs at least as many pixels as the sheet at your target DPI, so an A4 print at 300 DPI needs at least 2480 by 3508 pixels of source artwork to look crisp. For a deeper printer-specific walkthrough, see the paper size chart for printer guide.
Setting Page Size in Android Office Apps
Mobile office apps like Google Docs, Microsoft Office, and WPS Writer all let you set the page size when creating a new document or when adjusting the format of an existing one, and they typically offer A4 and US Letter as presets with smaller variants available in a full list. If you are switching between regions, expect to flip the default: a document created on an Android phone set to A4 will print with different margins when sent to a US-based printer loaded with Letter, and the other way around. For image work, apps like Canva and Adobe Express on Android accept a custom canvas size in pixels, which is exactly what the chart's converter outputs. Pick the paper format, type 300 DPI for print or 72 DPI for screen, and paste the resulting pixel width and height into the custom canvas dialog to match the physical sheet exactly. The same approach works when you are exporting from a design tool on the phone and need the resulting file to drop cleanly into a print workflow on a desktop.
Related reading: PDF N-Up on Android: Arrange Pages Without an App.