Morse Code Audio Decoder
Decode Morse code from audio files or your microphone directly in your browser. Upload a recording with Morse beeps, use live microphone input, or try the sample audio to translate audio Morse code to text.
This audio Morse code decoder runs locally in your browser, so you can translate Morse code sound into dots, dashes, and plain text without uploading your recording.
Drop an audio file here, or click to browse
WAV, MP3, OGG, M4A — max 30 MB
Lower sensitivity values help detect quieter Morse signals. Higher values help ignore background noise. The default setting works well for most clean recordings.
Upload a file, use your microphone, or try the sample to begin decoding Morse code audio.
Decode Morse Code Audio to Text Online
Use this free Morse code audio decoder to convert Morse beeps into dots, dashes, and readable text. It works with uploaded audio files and microphone input, making it useful when you have a recording, a sound clip, or live Morse code audio that you want to decipher.
The decoder listens for tone and silence patterns in the audio. Short tones are detected as dots, longer tones as dashes, and the gaps between tones are used to separate letters and words. The result is shown first as Morse code and then translated into plain text.
This tool is especially useful if you want to:
- Decode Morse code from an audio file
- Translate audio Morse code to text
- Decipher Morse code audio from a recording
- Use your microphone as a Morse code sound-to-text translator
- Check or clean up detected dots and dashes manually
Audio Morse Code Decoder for Files and Microphone
This audio Morse code decoder works with both uploaded recordings and live microphone input. Use it to decode Morse beeps from practice audio, radio recordings, puzzle sounds, or short clips where you need to convert Morse code sound to text.
For file decoding, upload a supported audio file and let the tool analyse the recording. For live decoding, choose the microphone option, allow browser access, and play the Morse code sound near your device. The detected Morse code and decoded text will appear in the output area.
Because the decoder runs in your browser, it is useful for quick tests, Morse practice, private recordings, and simple audio clips where you want a fast Morse translator audio workflow without installing software.
How to Use the Morse Code Audio Decoder
To decode Morse code from an audio file, choose the upload option and add a WAV, MP3, OGG, or M4A file containing Morse beeps. The audio Morse code decoder will analyse the sound, detect the tone patterns, and show both the detected Morse sequence and the decoded text.
To decode Morse code from your microphone, choose the microphone option, allow browser microphone access, and play the Morse audio near your device. When you stop listening, the tool converts the detected sound into Morse code and text.
If the result is close but not perfect, you can edit the detected dots and dashes manually and click Re-decode from Morse. This is useful for noisy recordings, uneven hand-keyed Morse, or audio where a few tones were missed.
Morse Code Sound to Text Translator
Think of this tool as a Morse code sound-to-text translator. It first detects the audio signal, converts the beeps into dots and dashes, and then translates the Morse code into readable text.
This is different from a normal text-based Morse translator. Instead of typing dots and dashes yourself, you can start with real Morse code audio and let the decoder detect the timing automatically.
For best results, use clear audio with one steady tone and as little background noise as possible. If the sound is noisy or the timing is irregular, the detected Morse code may need small manual corrections.
How Does Morse Code Audio Decoding Work?
The decoder analyses the audio waveform to find alternating periods of tone and silence. It measures the energy level of the signal across short time windows, then applies a sensitivity threshold to decide when a tone is present.
Short tone periods are interpreted as dots. Longer tone periods are interpreted as dashes. Short gaps separate parts of the same letter, medium gaps separate letters, and longer gaps separate words. The resulting dot-dash sequence is then matched against the International Morse Code table to produce readable text.
In simple terms, the tool works like a Morse code translator for sound: it first turns Morse audio into dots and dashes, then translates those dots and dashes into text.
When Does the Audio Morse Code Decoder Work Best?
The decoder works best with clear Morse audio that has a single steady tone and a quiet background. Recordings generated by software, tone generators, radio practice tools, or electronic keyers usually give the best results.
For best accuracy, use audio with:
- A single clear tone, ideally around 600–800 Hz
- Low background noise
- Consistent Morse speed throughout the message
- A clean dot-to-dash rhythm
- Clear spacing between letters and words
- Enough volume without clipping or distortion
Noisy recordings, background music, multiple tones, echo, very low volume, or irregular hand-keyed Morse can reduce accuracy. If the decoder misses tones or detects too many signals, adjust the sensitivity slider and try again.
Private Morse Code Audio Decoding in Your Browser
All audio processing happens locally in your browser using the Web Audio API. Your audio is not uploaded, stored, or sent to ConvertText.app.
This makes the tool useful for private recordings, practice sessions, radio clips, puzzle audio, or any Morse code sound that you do not want to send to an online server. Once the page has loaded, the decoder can also work offline in supported browsers.
Morse Code Audio Decoder vs Morse Code Translator
This Morse Code Audio Decoder is designed for sound. It helps you decode real audio from files or microphone input and convert Morse code sound to text.
If you already have written Morse code, dots and dashes, or normal text that you want to encode, use the regular Morse Code Translator instead. That tool converts typed text to Morse code and Morse code back to text, with audio playback and multi-language support.
Open Morse Code Translator →Frequently Asked Questions
How do I decode Morse code from an audio file?
Click the Upload file tab, then drag and drop an audio file or click to browse. The tool supports common formats such as WAV, MP3, OGG, and M4A. After loading the file, the Morse code audio decoder analyses the sound and shows the detected dots, dashes, and decoded text.
Can I translate audio Morse code to text?
Yes. This tool is designed to translate audio Morse code to text. It detects Morse beeps in an audio file or microphone recording, converts the sound pattern into Morse code, and then translates the Morse code into readable text.
Can I use this as an audio Morse code decoder with my microphone?
Yes. Choose the Microphone tab, click Start Listening, and allow microphone access when your browser asks for permission. Play the Morse code sound near your device, then stop the recording to decode it. All microphone audio is processed locally in your browser.
How can I decipher Morse code audio from a recording?
Upload the recording to the Morse code audio decoder and let the tool detect the tone and silence patterns. It will show the detected Morse code first, followed by the decoded text. If the recording is noisy or uneven, you can manually edit the detected dots and dashes and re-decode the message.
Is my Morse code audio uploaded anywhere?
No. Your audio is never uploaded to a server. The decoding process runs locally in your browser using the Web Audio API. ConvertText.app does not receive, store, or process your audio files.
What audio formats are supported?
Most modern browsers support WAV, MP3, OGG, and M4A files. WAV files usually give the best results because they are uncompressed. Compressed formats such as MP3 or AAC may introduce small artifacts that can make Morse tone detection less accurate.
Why did my Morse code audio not decode correctly?
Morse audio can be difficult to decode if the recording has background noise, music, echo, multiple tones, irregular timing, very low volume, or heavy compression. Try adjusting the sensitivity slider. You can also edit the detected Morse code manually and click Re-decode from Morse to correct small mistakes.
What is the best audio quality for Morse code decoding?
The best results come from a clean recording with one steady tone, clear spacing, and consistent speed. A tone around 600–800 Hz, low background noise, and normal recording volume usually work well.
What WPM range can the decoder handle?
The decoder works best with Morse code between about 5 and 35 WPM. Very slow, very fast, or highly irregular Morse may be harder to detect reliably, especially if the audio is noisy or the spacing is inconsistent.
What is the difference between this and the Morse Code Translator?
The Morse Code Translator works with typed text and written dots and dashes. This Morse Code Audio Decoder works with sound. Use this page when you need to decipher Morse code audio, and use the Morse Code Translator when you want to type or play Morse code manually.
Can this tool convert Morse code sound to text?
Yes. The tool detects Morse code sound, converts it into dots and dashes, and then translates the Morse sequence into text. This makes it useful as a Morse code translator for sound-based recordings.
Does the Morse code audio decoder work on iPhone or mobile Safari?
File upload decoding works in modern mobile browsers, including recent versions of Safari. Microphone input on iPhone may require you to tap the start button first so Safari can unlock audio access. If the microphone does not start, reload the page and tap Start Listening again.