Live Morse Code Decoder
Tip: Tap a key, whistle, or use a Morse key near your microphone. Adjust sensitivity for your environment.
Tips for Accurate Live Decoding
A live Morse code decoder listens through your microphone and turns beeps, tones, or taps into text in real time. It works by measuring sound: when the audio rises above a threshold it marks the start of a signal, and when it falls back it marks the end. Short signals become dots, long signals become dashes, and the gaps between them mark letter and word boundaries. Because the decoder must decide in real time, it is more sensitive to background noise than a decoder that analyzes a recording. A quiet room and a clear, steady tone make a large difference to accuracy.
Set up for success before you press start. Use a headset microphone or place your phone close to the speaker that is playing the code, and keep other sounds away: turn off music, fans, and notifications. Choose a clean tone if you control the source, and keep the volume steady rather than loud. Send or play at a moderate speed, around 10 to 13 words per minute, with even spacing. If the decoder shows the wrong letters, slow down and lengthen the gaps between letters slightly, because rushed spacing is the most common cause of errors. For practice without a microphone, the Morse code audio decoder and the Morse code to text decoder accept typed or uploaded input.
Live decoding is also a useful learning tool. Play a short word from the Morse code machine into the decoder and check whether it reads back the same word. That loop tests both your sending and the decoder's timing. If you are decoding a radio signal, a steady hand on the key and consistent spacing matter more than speed. With practice, you will learn to recognize the rhythm of clean code, and you will start to notice your own mistakes before the decoder does.
Frequently Asked Questions
How does a live Morse code decoder work?
A live Morse code decoder uses your device's microphone to listen for tones. It measures each tone's length, sorts short tones into dots and long tones into dashes, and uses the gaps between tones to split letters and words. The decoded text appears on screen as the code plays.
Why does my live Morse code decoder show wrong letters?
Wrong letters usually come from background noise, uneven spacing, or a volume that is too low or too high. Move to a quieter room, keep the tone steady, slow down slightly, and leave clear gaps between letters. If the problem continues, test with a clean tone from the Morse code machine.
Do I need to allow microphone access for a live Morse code decoder?
Yes. The decoder can only listen if your browser has microphone permission for this site. When your browser asks, choose Allow. You can revoke the permission later in your browser's site settings. The audio is processed in your browser and is not uploaded or stored.
Can a live Morse code decoder decode a radio signal?
It can decode a clean audio signal from a radio speaker held near the microphone, as long as the tone is steady and the room is quiet. Real radio signals often have static, fading, and interference, so accuracy varies. For best results, use a direct audio feed or a recorded file with the audio decoder instead. Learn how operators use these signals in the Morse code article on Wikipedia.
What speed should I use for live decoding?
Start at 10 to 13 words per minute with even spacing. That speed gives the decoder clear signals and clear gaps. Raise the speed only after decoding stays accurate for a full minute at your current speed.
Can I use a live Morse code decoder to learn Morse code?
Yes. Play short words into the decoder and check the result against what you sent. The instant feedback helps you hear your own spacing mistakes. Pair it with the learn Morse code guide and the Morse code practice drills to build listening skill. The ARRL, the national association for amateur radio, also offers structured Morse code learning resources for beginners.
