The letter U in Morse code is ..- — · · —. U is the thirteenth most common letter in English, which is why it received a medium 3-signal code.
How to Translate U to Morse Code
To translate U to Morse code, write ..-. In written form this is · · —. When sending by sound, tap a short beep then a short beep then a long beep. The dots and dashes follow the ITU-R M.1677-1 international Morse code standard used worldwide.
Visual Signal — What is U in Morse Code?
Here is what U looks like as physical signal blocks — this is the answer to "what is U in Morse code":
Memory trick: U: dit-dit-DAH — two short then one long.
U in the NATO Phonetic Alphabet
In the NATO phonetic alphabet, U is called Uniform. When spelling out a word letter by letter on radio, operators say "Uniform" to make U unmistakable from other letters that sound similar.
Words Starting With U
Click any word to hear it in Morse code:
Frequently Asked Questions
What is U in Morse code? +
U in Morse code is ..-, written as · · —. It uses 3 signals.
How do you translate U to Morse code? +
To translate U to Morse code, write ..-. A dot is a short signal and a dash is three times as long.
Tap short then short then long — ..- (· · —). The gap between signals within one letter is one dot length. The gap before the next letter is three dot lengths.
In the Two-Button Tap mode, press left then left then right for U. The input checks automatically when your tap count matches the code.
How Common is U in English?
U is the thirteenth most common letter in English. Morse code gave shorter codes to more frequent letters. U received a 3-signal code based on its frequency in everyday text.
Practice U in Morse
Start with the Learn page — U appears in a structured audio flashcard lesson. Then use practice mode for random drills. The timed quiz adds pressure that builds real recognition speed.