Practice Morse Code

Morse Code Challenge

How fast can you read Morse?

Decode Morse, build your streak, and see how far you can go — no account needed.

Decode the Signal

Learn · Level 1 Ready

Listen to a Morse signal and type the letter or number you heard. Get it right to build your streak — the challenge gets harder as you go.

Your progress is stored anonymously on this device — see our Privacy Policy.

How it works

Four steps, on repeat

1

Decode

You hear a Morse signal for one character.

2

Answer

Type the letter or number you think it is.

3

Build your streak

Correct answers in a row raise your streak.

4

Level up

Every 5-streak, the character pool gets harder.

What you're training

More than a quiz

Speed

How quickly you recognise a pattern once it starts.

Recognition

Hearing the shape of a letter, not counting signals one by one.

Accuracy

Telling similar-sounding characters apart under pressure.

Consistency

Keeping your streak alive as the difficulty increases.

What's in the challenge

Real characters, progressive difficulty

A–Z

Letters

All 26 letters of the alphabet.

0–9

Numbers

Introduced once you reach Level 4.

5

5 Levels

Characters, then whole words — see exactly how below.

∞

No account

Just an anonymous cookie on this device.

The challenge gets harder

Learn Decode Master
Level 1

Short, familiar codes: E, T, A, I, M, N — one or two signals each.

Level 2

More letters join, up to three signals long.

Level 3

The full alphabet, including longer, similar-looking codes.

Level 4

Letters and numbers mixed — recognition under pressure.

Level 5 · Words

Whole words, from short ("SOS") to long ("COMMUNICATION") — real Morse, not just letters.

Five correct answers in a row take you up a level. One mistake resets your streak, not your level.

From telegraph to touchscreen

The technology changed. The code didn't.

1844

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Today

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Morse insights

Why Morse is harder than it looks

It's not one signal per letter

Morse codes range from one signal (E, T) to five (most numbers), and several letters share the same opening pattern. Recognising the whole shape matters more than counting dots.

Timing is part of the code

A dash lasts three times as long as a dot, with a matching gap between letters and a longer one between words. Get the timing wrong and even a correct sequence sounds off.

Why answers get explained

When you miss one, we compare the two Morse patterns directly — a missing signal, an extra one, or a reversed pattern — instead of just saying "wrong". See a real example above once you've made a mistake.

About the challenge

FAQ

Every question you answer counts towards your total correct/incorrect count and your overall accuracy. Your streak counts consecutive correct answers, and resets to zero the moment you get one wrong — your best streak is kept separately.

All 26 letters of the alphabet, using International Morse Code (see our Alphabet page). Numbers 0–9 are introduced at Level 4, and whole words at Level 5. There is no punctuation yet.

You hear a whole word in Morse, letter after letter, and type the full word back. Words start short ("SOS", "HI") and get longer and less common the more you get right in a row. Getting a word only partly right still shows you exactly which letters were correct.

No. Your progress is tied to a single anonymous cookie on this device, with no personal information attached. See our Privacy Policy and Cookie Policy for details.

For single characters, we compare the Morse pattern you likely meant with the correct one — a missing signal, an extra one, or the two patterns being reversed. For words, we show exactly which letters you got right and which one tripped you up. It only appears when the comparison is clear enough to be genuinely useful.