How to read this sheet
Morse code uses only two signals: a short signal called a dot (or “dit”) and a long signal called a dash (or “dah”). A dot lasts one unit of time; a dash lasts three units. Between elements inside the same letter, leave a one-unit gap. Between letters, leave a three-unit gap. Between words, leave a seven-unit gap. That three-tier timing system — element gap, letter gap, word gap — is what separates morse from noise.
When you see .- in this sheet, read it as “di-dah” spoken aloud, not “dot dash.” The spoken sound, not the written symbol, is what your brain will eventually recognize automatically at speed.
How to use this sheet to learn
The fastest way to use a cheat sheet is as a check, not a crutch. Print the sheet and pin it to your wall. Then close your eyes, type a letter on your keyboard, and try to recall its code before you look. When you get it wrong, glance at the sheet, say the pattern aloud twice, and move on. Do not stare at the sheet while drilling — that builds visual dependence, which slows your copy speed to a ceiling around 8 WPM.
For flashcard drilling, write each letter on one side of an index card and its morse on the other. Shuffle the deck daily. The physical act of writing the code reinforces it better than passive reading. Once you can do 90% of the alphabet without checking, switch to the sound-first approach: use the Morsify translator to play back each letter and recognize it by ear alone. The sheet becomes a reference tool from that point forward, not a learning surface.
Printing tips
This page prints cleanly at A4 or US Letter size. Open your browser print dialog (Ctrl+P on Windows, Cmd+P on Mac) and select “Background graphics” if you want the dark card styling to appear on paper. For ink-saving classroom use, switch to your browser's Light Mode before printing to get a white background with black text and yellow codes.
Portrait orientation fits all three sections (letters, digits, punctuation) on a single page at most standard font sizes. Landscape orientation gives each row more horizontal space, which helps for wall-poster use. If you are printing for a classroom set, Letter-size landscape at 100% scale fits cleanly without scaling distortion on most printers.
A higher-resolution PDF of this sheet — sized for A4, US Letter, and A3 poster format — ships as part of our $4.99 PDF pack. Royalty-free for classroom, scout troop, and ham radio club use.
Related references
- Interactive alphabet page — tap any letter to hear it at 15 WPM.
- Full morse code chart — letters, digits, and every ITU punctuation mark.
- Learn morse code — a 90-day Koch-method plan to reach 18 WPM.
- Morse code for kids — a starter sheet and activities for children aged 8 and up.
Frequently asked questions
Is this the official ITU morse code?
Yes. The letter codes on this sheet are the international ITU-R M.1677-1 standard, which has been in force since 1865 with minor revisions. The punctuation marks are the full ITU set. If you find a discrepancy with another source, the other source is either using American Railroad morse (obsolete) or a non-standard regional variant. Everything on this page is international standard.
What's the difference between a morse code sheet and a chart?
Nothing significant — the terms are interchangeable. Some people call a wall-size reference a 'chart' and a pocket-size or printed-page version a 'cheat sheet', but the information is identical. This page uses 'sheet' in the title because that's the more common search term for a printable one-page reference, as opposed to a decorative poster.
Can I use this sheet commercially?
The morse code itself is a century-old international standard and is in the public domain. The layout and styling on this page are Morsify's original work. You may print and distribute the sheet free of charge for educational or personal use. Commercial printing for resale requires a license — contact [email protected]. The $4.99 PDF pack includes a license for classroom and club use up to 500 copies per year.