Morse Code Chart
Interactive reference card • Click any card to hear it played • see as list →
Letters A–Z
Numbers 0–9
Punctuation
Prosigns (procedural signals)
Special codes used by radio operators to control transmissions.
How to Use This Chart
Read the visual blocks
Each card shows the timing pattern visually — a small circle for a dit (short beep) and a wide rectangle for a dah (long beep, 3× the dit). The proportions match real Morse timing.
Click any card to hear it
A preview opens with the full visual and a Play Audio button so you can hear exactly how that character sounds in Morse code.
Print or save as PDF
Click Print / Save PDF for a clean printable reference card. Navigation, header, and footer are excluded automatically — plus you can toggle student Name & Date fields.
Frequently Asked Questions
How do I read a Morse code chart?
Each card shows a character with its Morse timing pattern. A small circle is a short beep (dit), a wide bar is a long beep (dah). Click any card to hear it.
What are prosigns in Morse code?
Prosigns are special procedural codes used by radio operators. AR = end of message, SK = end of contact, KN = only the named station should reply, CQ = calling any station.
Can I print this chart for free?
Yes — completely free. Click Print / Save PDF above. Navigation and extra content hide automatically so only the clean chart prints, with optional student Name & Date lines.
What is the difference between dots and dashes?
A dot (dit) is 1 unit long. A dash (dah) is 3 units long. The gap between signals in the same letter is 1 unit, between letters is 3 units, and between words is 7 units.