1 · Choose a section
Use the letters, numbers or punctuation section above. Each button plays one complete character.
Look up the Morse code alphabet, numbers 0–9 and punctuation on one chart. Hear each character, follow the tree, or download a PDF decoder chart.
Select a character to hear its complete rhythm.
.--...-.-.-.....-.--........----.-.-..---.---.--.--.-.-....-..-...-.---..--.----..Each digit has five marks. From 1 to 5, add leading dots; from 6 to 9, add leading dashes. Zero is five dashes, while O has only three.
-----.----..---...--....-.....-....--...---..----.Encode each digit separately and keep character gaps. A multi-digit number has no single combined code.
10 → .---- -----
100 → .---- ----- -----
2026 → ..--- ----- ..--- -....
These common signs have codes in the ITU reference. In written Morse, / separates words; encode the slash character itself as -..-.
.-.-.---..-----.....--...----.-....--..-.-.--.-.--.-.-..-.-...-.-.-..--.-.These additional signs are supported by the converter but are outside the punctuation table in the linked ITU standard. Other references may use different conventions.
-.-.--.-...-.-.-...--.-...-..-Use one dot as a time unit: dot 1, dash 3; gaps within a character 1, between characters 3, between words 7.
Learn Morse code →Start at the root. A dot goes left; a dash goes right. This tree includes A–Z and 0–9. Empty nodes are steps, not letters.
This chart uses International Morse A–Z, not American landline Morse or other writing systems.
ITU-R M.1677-1 ↗Use the letters, numbers or punctuation section above. Each button plays one complete character.
A space separates written characters and / separates words. The numeric examples preserve each digit as its own group.
Download the reference PDF, print this chart, or follow dot-left and dash-right branches in the lookup tree.
The International Morse A-Z alphabet and 0-9 digits share the same timing rules. The punctuation section lists common standard signs; extra converter-supported signs are labelled separately.
From 1 to 5, leading dots increase. From 6 to 9, leading dashes increase; 0 has five dashes. Compare 0 (-----) with O (---). Encode 10, 100 or 2026 digit by digit rather than joining their marks.
Each dot takes the left branch and each dash the right branch. Stop at the end of the character. The tree is a visual reference; listening practice helps you recognize a whole sound rhythm.
H .... E . L .-.. L .-.. O ---The same L group occurs twice. Play the letters in the chart, then try the introductory listening exercises.
Learn to read and hear Morse code →Yes. The numbers section contains all digits 0-9, their five-mark patterns and multi-digit examples.
Yes. Download the English or Chinese PDF, or use Print chart to print the reference without the rest of the website.
Start at the root, go left for a dot and right for a dash. The tree covers A-Z and 0-9.
It uses International Morse with Latin letters. Changing the interface language does not add Chinese character codes or Japanese Wabun Morse.