How does the microphone decode work?

Click the Mic button and tap short/long tones or use a key against a surface near the mic. The tool measures audio amplitude over time and classifies bursts as dots or dashes based on their duration relative to the WPM setting.

What speed (WPM) should I use?

The default is 13 WPM, which is a comfortable learning speed. Adjust the slider up to 35 WPM for faster practice or down to 5 WPM for beginners.

Which characters are supported?

All 26 letters (A–Z), digits (0–9), and common punctuation marks including period, comma, question mark, slash, and more per the ITU standard.

Can I copy the decoded output?

Yes. Click the Copy button below the output box to copy the result to your clipboard.

Text 無料サインアップ不要

Advanced Morse Code Converter

Bidirectional Morse code converter with audio playback and microphone decode.

ツールを読み込み中…

このツールについて

Convert text to Morse code or decode Morse code back to text with full bidirectional support. In text-to-Morse mode, the output is displayed as dots and dashes with a built-in audio player that plays the signal using the Web Audio API at an adjustable words-per-minute rate. In Morse-to-text mode, paste dots and dashes or use the microphone button to decode live audio taps using amplitude detection. Supports the full ITU character set including letters, digits, and punctuation.

使い方

1 Select the conversion direction: Text → Morse or Morse → Text.
2 Type your message (or paste Morse code with spaces between letters).
3 Click Convert to see the result.
4 In Text → Morse mode, click Play to hear the Morse code signal.
5 In Morse → Text mode, optionally click the Mic button to decode live audio.

このツールについて

使い方

よくある質問