NATO Phonetic Alphabet Converter - Spell Words Phonetically

How to use this tool

1. Enter text. Type letters, digits, and any punctuation you want to spell out.
2. Choose a spelling convention. ICAO (Alfa / Juliett) is selected by default; choose Traditional (Alpha / Juliet) to use those familiar variants.
3. Choose an output format. Use one word per line, inline output with a configurable separator, or a tab-separated table.
4. Copy the result. Review the recognized and unrecognized character counts, then copy the generated output.

About the NATO phonetic alphabet

The NATO phonetic alphabet, formally the International Radiotelephony Spelling Alphabet, assigns a distinct code word to each letter so names and codes are easier to distinguish when spoken aloud. This converter uses ICAO spellings by default, including Alfa for A and Juliett for J. Choose Traditional to keep the familiar English variants Alpha and Juliet. Both conventions are available for practical spelling tasks such as sharing a booking reference or vehicle registration by phone; this tool is not certified air traffic control training.

ICAO uses Alfa with an f and Juliett with two final ts to support clear, consistent pronunciation across language backgrounds. The spellings appear in ICAO Annex 10; NATO's history of the phonetic alphabet also lists Alfa and Juliett.

How to use

Enter text and the converter instantly outputs each letter or digit as its code word. Choose ICAO or Traditional spelling, then use one of three output formats:

• One per line: Each character on its own line, ideal for reading aloud.
• Inline: All phonetics joined by a separator (configurable).
• Table: Tab-separated two-column output for pasting into spreadsheets.

Digits

Digits 0–9 are also converted: Zero, One, Two, Three, Four, Five, Six, Seven, Eight, Niner. This tool retains its existing digit words; only 9 uses the distinct form "Niner" to avoid confusion with the German word nein. Other radio digit pronunciations used in some aviation contexts are not part of this converter.

Phonetic alphabet spelling reference

Evolution of the phonetic alphabet

Earlier phonetic alphabets existed before NATO's. During World War II, the US military used the Able Baker Charlie alphabet (Able, Baker, Charlie, Dog, Easy…). The UK used a different system. After the war, the International Civil Aviation Organization (ICAO) worked with the ITU to create a single international standard. The current alphabet was adopted in 1956 and has been stable since. Earlier CCIR proposals in 1927 contributed several of the surviving code words.

Common punctuation words and prosigns are not converted

People may say words such as “stop,” “comma,” or “slash” when clarifying punctuation aloud, but this converter does not translate punctuation into those words or prosigns. Periods, commas, hyphens, question marks, slashes, and other punctuation remain unchanged in the output and count as unrecognized characters.