Morse Code Translator (English & Japanese Wabun)
Convert text to Morse code and decode Morse back into text. It supports international Morse (letters, digits, punctuation) and Japanese Wabun Morse (katakana with dakuten, the long-vowel mark and Japanese punctuation), and plays the result as a beep or a flashing light. To convert between Japanese kana and romaji first, use the Romaji ⇔ Kana Converter. Nothing you type leaves this page.
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Play as sound or light
Plays the converted result (or the Morse code you typed, when decoding) at real speed.
Light playback flashes the screen. Do not use it if flashing light can affect your health. It plays slowly enough to stay at or below 3 flashes per second.
Light playback is unavailable because your system is set to reduce motion.
How to use
- Choose the "Direction" and the "Code type" (international or Wabun).
- Type text (or Morse code) in the input box and the result appears immediately.
- Use "Copy result" to take it away. You can also switch to ・ and － symbols or to space-separated words.
- In "Play as sound or light", set the speed and tone, then press "Play" to hear or see the code.
Notes
- Wabun Morse is sent in katakana. Hiragana and half-width kana are converted too, small kana (ッ, ャ and so on) use the same code as the full-size kana, and kanji and Latin letters cannot be converted.
- Dakuten (゛) and handakuten (゜) have their own codes (.. and ..--.), sent after the base kana. For example ガ is sent as カ followed by ゛.
- To decode, separate letters with a single space and words with "/" or two or more spaces. The ・ and － symbols are accepted as well.
- Sound starts when you press a button, because browsers do not allow sound without a user action. It stops if you switch tabs or leave the page.
- Light playback is limited to 7 WPM so it never flashes more than 3 times per second, and it is unavailable when your system is set to reduce motion.
Glossary
Morse code
A code that writes letters as dots and dashes. A dash lasts three dots; the gap is one dot inside a letter, three between letters and seven between words.
Wabun Morse
The Morse code for Japanese kana. For example イ is ・－ and ロ is ・－・－. Dakuten, handakuten, the long-vowel mark and Japanese punctuation have their own codes.
WPM
Words per minute, the unit of sending speed, based on the word "PARIS". One dot lasts 1.2 ÷ WPM seconds.
SOS
The well-known international distress signal, ・・・ －－－ ・・・. Typing "SOS" converts to this pattern.
FAQ
How are dakuten and handakuten sent in Wabun Morse?
They have their own codes and follow the base kana: dakuten is ・・ and handakuten is ・・－－・. For example ガ is sent as the code for カ followed by the dakuten code. When decoding, the tool combines them back into ガ or パ.
Can it convert hiragana or small kana such as ッ and ャ?
Hiragana is converted to the same codes as katakana. Wabun has no separate code for small kana, so ッ and ャ are sent as the full-size ツ and ヤ, and they decode as the full-size kana. Kanji and Latin letters cannot be converted.
Why does the same pattern decode to different characters?
International and Wabun Morse are different code tables. For example ・－ is "A" in international Morse and イ in Wabun. Choose the code type that matches the message when decoding.
How should I separate letters and words when decoding?
Separate letters with a single space and words with "/" or two or more spaces. The ・ and － symbols also work. A pattern that is not in the table is shown as □ and listed as an undecoded code.
Why is light playback slower than sound?
To keep the screen from flashing more than 3 times per second. Even a run of dots stays within that limit, so light playback is capped at 7 WPM. Sound alone can be set from 5 to 40 WPM.
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