How to Print on Both Sides of the Paper

What You’ll Need

A printer (check if it supports automatic duplex printing)
Paper (standard A4 or Letter works best)
A computer or mobile device with the document open
Printer drivers installed (usually automatic)

Step-by-Step

Check if your printer supports automatic duplexing. Look for a duplex symbol (two rectangles with arrows) on the printer, or check the printer’s manual or settings. If it does, go to step 3. If not, skip to step 6 for manual duplexing.
Open the print dialog. In most programs, press Ctrl+P (Windows) or Cmd+P (Mac), or go to File > Print. The exact menu may vary by version.
Look for a two-sided or duplex option. In the print dialog, find a dropdown or checkbox labeled “Two-sided,” “Duplex,” or “Print on Both Sides.” Choose “Long-edge binding” (flip on long edge) for normal documents, or “Short-edge binding” (flip on short edge) for documents that open like a notebook.
Select the pages you want. If you only need some pages, enter a page range. Otherwise, choose “All” or “Print All Pages.”
Click Print. The printer will automatically print both sides. Wait for the document to finish.
Manual duplex printing (if no automatic option). First, print only the odd pages (or even pages, depending on your printer). In the print dialog, choose “Print Odd Pages” or “Print Even Pages” (look under “Pages” or “More settings”). After printing, take the paper stack and flip it over (be careful about the orientation—usually you flip along the long edge). Put the paper back into the paper tray. Then print the even pages (or odd, whichever you didn’t print).
Check the output. After printing, verify that the pages are in the correct order and orientation. If not, adjust the flip direction (long-edge vs. short-edge) and try again.

Common Mistakes

Wrong flip direction: Flipping the wrong way causes the back page to be upside down. Remember: long-edge binding (like a book) flips along the long side; short-edge binding (like a calendar) flips along the short side.
Paper jams: Overfilling the paper tray or using wrinkled paper can cause jams during duplex printing. Always fan the paper and load it correctly.
Incorrect page order in manual duplex: If you print odd pages first, then flip, the even pages must be printed in reverse order (last even page first) if your printer doesn’t automatically reorder. Check your printer’s manual.
Forgetting to select duplex: Sometimes the duplex option is hidden under “Printer Properties” or “Preferences.” Look carefully.

Tips

Use the “Flip on Long Edge” for standard documents (like letters or reports) because it reads like a book.
Use “Flip on Short Edge” for documents that open upward (like a calendar or a presentation that you flip over the top).
Test with a single sheet first to see the orientation before printing a long document.
Choose “Auto” duplex if available—it’s the most reliable.
For manual duplex, print a small test (like 2 pages) to figure out the correct flip direction.
Use the printer’s mobile app if you’re printing from a phone; many apps have a duplex toggle.

Troubleshooting

No duplex option in the print dialog: Your printer may not support automatic duplexing. Check the printer’s manual or the manufacturer’s website. If it doesn’t, use manual duplex (step 6).
Back pages are upside down: Change the binding setting (long-edge to short-edge, or vice versa) in the print dialog.
Pages come out in wrong order: For manual duplex, try printing even pages first, then odd, or reverse the page order in the print dialog (look for “Reverse Pages” or “Print in Reverse Order”).
Paper jams repeatedly: Remove paper, fan it, and reload. Make sure the paper guides are snug but not tight. Use fresh paper if it’s humid.
Printer prints blank pages on the back: Some printers have a “duplex” mode that expects you to flip manually but still prints a blank side. Check the printer’s manual for the correct procedure.
Printing a PDF with mixed orientations: Some pages may be landscape and others portrait. The duplex setting applies to all; you may need to split the document into sections and print separately.

Frequently Asked Questions

Can I print on both sides with any printer?

Yes, you can manually print on both sides with any printer that can print on one side. Automatic duplexing is a feature of many, but not all, printers.

What does “flip on long edge” mean?

It means the paper flips like a page in a book (along the long side). This is standard for documents that read left to right.

Why is my duplex printing not working?

Common reasons: the printer doesn’t support it, the driver is outdated, or the setting is not selected correctly. Check the printer’s manual and update drivers.

Can I duplex print from a mobile device?

Yes, most printer apps (like HP Smart, Epson iPrint) have a duplex option. Look for “Two-sided” in the app’s print settings.

How do I know if my printer supports automatic duplexing?

Check the printer’s control panel for a duplex symbol, or look in the printer properties in the print dialog. If you see “Two-sided” or “Duplex” options, it supports it.

Does duplex printing use more ink?

No, it uses the same amount of ink per page. It just saves paper.

Sources: HP Support. Menus and buttons can differ slightly by version. Spotted something out of date? Tell us.