Morse code alphabet A-Z and numbers 0-9 in one reference page.

The standard design of International Morse digits is beautiful in its mathematical symmetry. Digits 1 to 5 accumulate dots on the left, while digits 6 to 0 accumulate dashes on the left. This visual progression matches the numeric quantity: the number of dots in the first half corresponds to the digit value, and the number of dots in the second half corresponds to ten minus the digit value.

If you want to practice translating dates or phone numbers dynamically, try using our dedicated Morse code number translator.

Because numbers are vital for coordinates, weather reports, and times, they must be sent with extreme spacing discipline. Missing a letter in a word can often be resolved by context, but miscopying a single coordinate digit can throw off a map location entirely. Operators are taught to space digit groups deliberately, keeping a clean 7-unit gap between groups.

For a deeper dive into the rules governing spacing and timing, see our guide on learning Morse code timing rules.

When starting out, it is tempting to use flashcards or charts to memorize letters visually. However, when you listen to a real transmission, your brain will struggle to convert the sound into a picture, and then into a letter, before the next signal arrives.

To build high WPM proficiency, learn by sound from day one. Try our complete learning guide to understand how to bypass visual lookup entirely.

S (...) vs H (....): Just one extra dot separates these. Practice distinguishing 3 dots from 4 dots by listening for the subtle "heaviness" of the longer cluster.

U (..-) vs V (...-): The difference between two dots and three dots before the dash. In fast sending, the extra dot can blend into preceding dots.

D (-..) vs B (-...): One extra dot after the dash distinguishes B from D. The "dit count" in the tail is subtle.

W (.--) vs J (.---): An extra dash transforms the pattern. At speed, counting two versus three dashes can be hard.