Morse code numbers
1 in Morse Code
The number 1 in Morse code is .---- — spoken "di-dah-dah-dah-dah". Press play to hear it, flash it as light, or copy the code.
What does .---- mean in Morse code?
.---- is the number 1 in International Morse code. The code is made of 1 dit (short) and 4 dahs (long), which is why it is read aloud as "di-dah-dah-dah-dah". It takes 17 time units to send — at a standard 20 words per minute that is roughly 1020 milliseconds.
The number 1 starts with a single dit and then "fills up" with dahs. In the cut-number system it is sent as A (·−). Together with 2, 3, 4 and 5 it shows how digits count upward with dits.
How 1 is timed
Morse timing is built from one unit — the length of a dit. A dah is three units, and there is one silent unit between the symbols of a letter. Here is 1 drawn to scale:
How to remember 1
Numbers are easier than they look because they follow a ladder. 1 is 1 dit followed by 4 dahs. Say it to the rhythm "one dit, then four dahs" and it sticks. The full ladder is on the numbers 0–9 page.
Easy to confuse with
When you are learning by ear, these codes sound close to 1:
1 at a glance
| Morse code | .---- |
|---|---|
| Spoken | di-dah-dah-dah-dah |
| Symbols | 1 dit, 4 dahs |
| Length | 17 units · ≈1020 ms at 20 WPM |
| Pattern | 1 dit followed by 4 dahs |
| Reversed | ----. = 9 |
Frequently asked questions
How do you write 1 in Morse code?
The number 1 is written .---- — 1 dit and 4 dahs. Spoken aloud it is "di-dah-dah-dah-dah".
What does .---- mean in Morse code?
.---- is the number 1 1 in International Morse code. If you see or hear "dit dah dah dah dah", it stands for 1.How long does 1 take to send?
1 lasts 17 time units (a dit is 1 unit, a dah is 3, with 1 unit between symbols). At 20 WPM that is about 1020 ms; at a beginner speed of 12 WPM about 1700 ms — plus a 3-unit pause before the next character.
Why is 1 1 dit followed by 4 dahs?
Morse numbers follow a ladder: 1–5 start with that many dits and fill the rest with dahs; 6–9 start with dahs and fill with dits; 0 is five dahs. So 1 is 1 dit followed by 4 dahs. See the numbers chart for the whole pattern.