Semaphore Flag Translator

Encode text into flag semaphore — the visual signaling system used at sea and by scouts — and decode it back. Each letter is represented by a person holding two flags in one of eight positions (like the hours of a clock). The diagram shows the flag positions for every letter A–Z, digits, and the numeric-shift and space signals. Pairs with the Morse Code and NATO Phonetic tools. Runs locally in your browser.

Text to encode

Semaphore letters to decode

Semaphore chart

Flag semaphore uses eight positions around the body, like a clock face. The two flag positions combine to represent each letter. In the numeric shift, letters A–D become digits 1–4 and J, E–I become 5–9, and K is zero. Pairs with Morse Code, Braille, and NATO Phonetic tools. Runs locally.