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Morse Code Number 0
Five dashes – the longest continuous tone in Morse code numbers.
— — — — —
🎧 Listen to Number 0
✔ Each dash lasts 3 times longer than a dot. The gap between dashes = 1 unit.
✋ Tapper – practice sending 0
Tap the button to simulate a dash. Send 5 dashes with short pauses.
Correct sequence for 0: 5 dashes with equal spacing. Try tapping DASH five times.
📘 Tutorial: How to send and receive 0
Pattern breakdown
Number 0 = — — — — — (five dashes). No dots.
Timing rules
- Dash length = 3 units of time
- Gap between dashes = 1 unit
- Total duration ≈ 19 units (5×3 + 4×1)
Spoken mnemonic
“dah dah dah dah dah” – say it slowly, with equal pauses.
Common uses
- Used in frequencies, emergency test tones, and numeric data transmission.
✍️ Practice quiz
Question: What is the Morse code for number 0?
Use . for dot, - for dash, or copy-paste —.
❓ Frequently asked questions about 0
Why is 0 represented by five dashes?
Morse code numbers follow a symmetric pattern: 1–5 have leading dots (1 dot = 1, 5 dots = 5). 6–9 have leading dashes, and 0 is the extreme – all dashes. This makes it easy to recognize by rhythm.
How do I pronounce 0 in Morse code?
Operators say “dah dah dah dah dah” (five long dahs).
Is 0 the longest Morse code number?
Yes, because it consists entirely of dashes. The total transmission time is longer than any other digit.
Can I use a flashlight to send number 0?
Absolutely – long flashes (3 seconds each) for dashes, short off‑time (1 second) between flashes.