Morse Code

Morse code represents letters, numbers, and punctuation using combinations of dots and dashes. A dot is a short signal, while a dash lasts three times longer.

Characters are transmitted using precise timing rules. One dot is one time unit. One dash is three time units. The gap between dots and dashes inside the same character is one unit, the gap between letters is three units, and the gap between words is seven units.

In written Morse code, letters are usually separated by spaces and words are separated by / . In audio Morse code, the same structure is represented by silence of different lengths.

This tool uses International Morse Code (ITU-R M.1677-1), the modern worldwide standard used by amateur radio operators, training materials, educational resources, and signaling systems.

The table below shows the standard International Morse Code symbols for English letters, digits, and common punctuation.

Although Morse code is no longer used for most commercial communication, it remains popular in amateur radio, emergency preparedness, aviation history, military history, education, puzzles, and outdoor signaling.

Because Morse messages can be transmitted as sound, light, vibration, or simple on/off signals, Morse code remains one of the most resilient communication systems ever developed.

Morse code was developed in the 1830s and 1840s by Samuel Morse and Alfred Vail for use with the electrical telegraph. It allowed operators to send text messages over long distances using short and long electrical pulses.

The original American Morse code was later replaced in many contexts by International Morse Code, which became the standard for maritime, aviation, military, amateur radio, and signaling use.

Although modern digital communication has replaced Morse code in most professional systems, it remains historically important and is still practiced for radio communication, training, emergency signaling, and cultural interest.

The built-in audio player can generate Morse tones directly from your encoded message. You can adjust the transmission speed using WPM (Words Per Minute) and change the tone frequency to match your training preferences.

Listening practice is one of the most effective ways to learn Morse code. Beginners often start at slower speeds and gradually increase WPM as recognition improves.

Modern International Morse Code supports Latin letters, digits, and a standard set of punctuation marks. Different languages may extend the alphabet with additional Morse symbols for accented characters.

This allows Morse code to be adapted for many languages while preserving the same timing principles and signaling rules.