Morse Code Chart

How to Use the Morse Code Chart

This comprehensive Morse code chart is designed to be your ultimate quick-reference guide. It contains the official International Telecommunication Union (ITU) standard sequences for all 26 letters of the English alphabet, numbers 0 through 9, and critical emergency signals. Whether you are translating a message by hand, verifying a transmission, or studying for an amateur radio license, this chart provides accurate, at-a-glance information.

We recommend printing this chart using the "Print This Chart" button at the top of the page. Our stylesheet is specifically optimized to hide the website navigation and footer during printing, ensuring you get a clean, high-contrast, single-page reference sheet that is perfect for your ham radio shack, survival kit, or classroom.

Reading the Chart (Dits and Dahs)

The visual representations of dots (.) and dashes (-) on this chart correspond to short and long auditory signals, often referred to phonetically as "dits" and "dahs."

• A "dit" (dot): The fundamental unit of time in Morse code. When spoken out loud, it is pronounced as "dit" (or "di" when it's not the final signal in a character).
• A "dah" (dash): Exactly three times the duration of a "dit".

For example, the letter 'C' (-.-.) is phonetically pronounced "dah-di-dah-dit". Learning to vocalize these sounds while looking at the chart is a proven method for faster memorization.

A Brief History of the International Standard

The original Morse code, developed by Samuel Morse and Alfred Vail in the 1830s for the American telegraph system, is significantly different from the chart you see today. The original "American Morse Code" included internal spaces within characters and varying lengths of dashes, making it difficult to transmit over long submarine cables.

In 1848, Friedrich Clemens Gerke created the "Continental Morse Code" standard in Germany, which simplified the system by making all dashes a uniform length and eliminating internal spaces. This refined version was later adopted as the International Morse Code standard we use worldwide today. The chart above reflects this globally recognized system, ensuring your communications can be understood by operators anywhere on Earth.