Morse Code Sending Practice

Learn Morse code free in your browser: Koch lessons, key, paddle and keyboard.

Koch method: start with K and M, add one character at a time as you master them
Three input methods: straight key (Space), paddle (← →) and keyboard
Live progress bar showing press length and the dit/dah boundary
Mistakes shown next to the correct code; review only your weak characters

What you can do

Sending practice

Key with a straight key (Space), a paddle (← →) or the keyboard, and see the length of every press against the dit/dah boundary.

Copy by ear

Hear one character at a time at a steady pace, copy it into five-letter groups, and get graded all at once at the end.

Chart, translator & Q codes

Look up every letter, number and symbol with sound, translate text ↔ Morse code, and learn CQ, 73, QSL and other radio abbreviations.

Korean, Japanese, Russian & Chinese

Practice Hangul, Japanese Wabun kana and Cyrillic Morse code, and look up 4-digit Chinese telegraph codes.

Start here

Frequently asked questions

Is CQ73 free?: Yes. Everything runs in your browser with no sign-up, and your progress is saved on your device.
How long does it take to learn Morse code?: With 10–20 minutes a day, most learners can copy the whole alphabet at a comfortable speed within one to three months. Short daily sessions work best.
Do I need a Morse key or a radio?: No. The space bar, the arrow keys or a touch screen are enough to start. Many operators learn this way before getting on the air.
Which method does CQ73 use?: The Koch method — start with two characters at full speed and add one at a time — combined with Farnsworth spacing, the approach most CW instructors recommend.