72 cards

Morse Code Flash Cards for Letters and Numbers, to Print

Read the letter, say its dots and dashes, then turn the card to check.

Tap or click the card to see the answer.

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1 or 2 signals: E T A I M N 6

A A is dot dash, said di dah. Sent backward it is N.
E E is dot, said dit. The shortest code there is.
I I is dot dot, said di dit. It reads the same backward.
M M is dash dash, said dah dah. It reads the same backward.
N N is dash dot, said dah dit. Sent backward it is A.
T T is dash, said dah. One dash, as long as three dots.

3 signals: D G K O R S U W 8

D D is dash dot dot, said dah di dit. Sent backward it is U.
G G is dash dash dot, said dah dah dit. Sent backward it is W.
K K is dash dot dash, said dah di dah. It reads the same backward.
O O is dash dash dash, said dah dah dah. It reads the same backward.
R R is dot dash dot, said di dah dit. It reads the same backward.
S S is dot dot dot, said di di dit. It reads the same backward.
U U is dot dot dash, said di di dah. Sent backward it is D.
W W is dot dash dash, said di dah dah. Sent backward it is G.

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4 signals 12

B B is dash dot dot dot, said dah di di dit. Sent backward it is V.
C C is dash dot dash dot, said dah di dah dit. Backward it is no letter.
F F is dot dot dash dot, said di di dah dit. Sent backward it is L.
H H is dot dot dot dot, said di di di dit. It reads the same backward.
J J is dot dash dash dash, said di dah dah dah. Backward it is no letter.
L L is dot dash dot dot, said di dah di dit. Sent backward it is F.
P P is dot dash dash dot, said di dah dah dit. It reads the same backward.
Q Q is dash dash dot dash, said dah dah di dah. Sent backward it is Y.
V V is dot dot dot dash, said di di di dah. Sent backward it is B.
X X is dash dot dot dash, said dah di di dah. It reads the same backward.
Y Y is dash dot dash dash, said dah di dah dah. Sent backward it is Q.
Z Z is dash dash dot dot, said dah dah di dit. Backward it is no letter.

Numbers 0 to 9 10

0 0 is five dashes. Every number has five signals.
1 1 is one dot, then four dashes. Every number has five signals.
2 2 is two dots, then three dashes. Every number has five signals.
3 3 is three dots, then two dashes. Every number has five signals.
4 4 is four dots, then one dash. Every number has five signals.
5 5 is five dots. Every number has five signals.
6 6 is one dash, then four dots. Every number has five signals.
7 7 is two dashes, then three dots. Every number has five signals.
8 8 is three dashes, then two dots. Every number has five signals.
9 9 is four dashes, then one dot. Every number has five signals.

Code first 36

— — is T: dash.
— — — — is M: dash dash.
— — — — — — is O: dash dash dash.
— — — — — — — — — — is 0: dash dash dash dash dash.
— — — — • — — — — • is 9: dash dash dash dash dot.
— — — • • — — — • • is 8: dash dash dash dot dot.
— — • — — • is G: dash dash dot.
— — • — — — • — is Q: dash dash dot dash.
— — • • — — • • is Z: dash dash dot dot.
— — • • • — — • • • is 7: dash dash dot dot dot.
— • — • is N: dash dot.
— • — — • — is K: dash dot dash.
— • — — — • — — is Y: dash dot dash dash.
— • — • — • — • is C: dash dot dash dot.
— • • — • • is D: dash dot dot.
— • • — — • • — is X: dash dot dot dash.
— • • • — • • • is B: dash dot dot dot.
— • • • • — • • • • is 6: dash dot dot dot dot.
• • is E: dot.
• — • — is A: dot dash.
• — — • — — is W: dot dash dash.
• — — — • — — — is J: dot dash dash dash.
• — — — — • — — — — is 1: dot dash dash dash dash.
• — — • • — — • is P: dot dash dash dot.
• — • • — • is R: dot dash dot.
• — • • • — • • is L: dot dash dot dot.
• • • • is I: dot dot.
• • — • • — is U: dot dot dash.
• • — — — • • — — — is 2: dot dot dash dash dash.
• • — • • • — • is F: dot dot dash dot.
• • • • • • is S: dot dot dot.
• • • — • • • — is V: dot dot dot dash.
• • • — — • • • — — is 3: dot dot dot dash dash.
• • • • • • • • is H: dot dot dot dot.
• • • • — • • • • — is 4: dot dot dot dot dash.
• • • • • • • • • • is 5: dot dot dot dot dot.

How this list was compiled: The codes are facts no one owns; the sets and the line under each answer are our own. Checked on 2026-09-30. All 36 codes were read from Recommendation ITU-R M.1677-1, International Morse code, of the International Telecommunication Union, https://www.itu.int/dms_pubrec/itu-r/rec/m/R-REC-M.1677-1-200910-I!!PDF-E.pdf, which also gives the lengths: a dash equals three dots, the space inside a letter one dot, between letters three dots and between words seven. The same 36 codes were compared with the Phonetic Alphabet and Morse Code table in the Federal Aviation Administration's Aeronautical Information Manual, chapter 4, section 2, https://www.faa.gov/air_traffic/publications/atpubs/aim_html/chap4_section_2.html, and the two agree. Dit and dah as the spoken names of dot and dash, the spoken form di dah di dit for L, E as the most common letter in English with the shortest code, and the SOS signal: https://en.wikipedia.org/wiki/Morse_code. Licence: own work

How it works

These Morse code flash cards cover the 26 letters and the numbers 0 to 9 in International Morse code. The front shows the character and the back its dots and dashes. One set turns the cards round.

Read the full guide

Five sets, shortest codes first

Show only sorts the letters by length: 1 or 2 signals (E, T, A, I, M, N), then 3, then 4. Every number has 5. Code first shows the dots and dashes and asks for the character. All deals the 36 character-first cards.

Print 12 cards to a sheet

Pick a set, turn a card and press the print button under the card. Each of the first four sets fits one sheet of Letter or A4, and all 36 take three. Print double-sided and flip on the long edge, so each code lands behind its letter.

A dash lasts as long as three dots. The gap between two letters is three dots long, and between two words, seven.
Operators say dit for a dot and dah for a dash. L, dot dash dot dot, is said di dah di dit.
Numbers follow a pattern: 1 to 5 start with that many dots, 6 to 9 with one to four dashes, and 0 is five dashes.

Questions and answers

What is SOS in Morse code?

Three dots, three dashes, three dots. It is sent as one run, with no gaps between the letters. On the cards, S is three dots and O is three dashes.

Which letter has the shortest Morse code?

E, a single dot. E is the most common letter in English, and the code gives it the shortest signal. T is a single dash.

Which Morse code do these cards use?

International Morse code, as the International Telecommunication Union publishes it in Recommendation M.1677-1. The Federal Aviation Administration's manual for pilots prints the same codes for the 26 letters and ten numbers.