NATO Phonetic Alphabet Converter
The NATO phonetic alphabet — officially the International Radiotelephony Spelling Alphabet — assigns a standardised code word to each letter of the Latin alphabet (Alfa, Bravo, Charlie … Zulu) and spoken words for digits (Zero through Niner). It was developed by ICAO and NATO to eliminate ambiguity when spelling out words over voice radio or telephone, where similar-sounding letters such as B and D, or M and N, can easily be misheard.
Simply type any text into the input box and each character is instantly mapped to its NATO code word. The converter handles all 26 letters and the digits 0–9. It is widely used by pilots, air traffic controllers, military personnel, emergency services, and anyone who needs to communicate critical information — call signs, serial numbers, license plates, passwords — with zero chance of mishearing a letter.
How it works
Each letter A–Z is replaced by its designated NATO code word (A=Alfa, B=Bravo, … Z=Zulu). Digits 0–9 are replaced by spoken words (0=Zero, 1=One, … 9=Niner). Spaces between words are represented by a dash (—). Code words are joined by spaces.
Use cases
- Spelling out call signs, tail numbers, or registration codes over radio
- Communicating passwords or serial numbers by phone without ambiguity
- Aviation and air traffic control communications
- Military and emergency services radio operations
- Teaching or learning the NATO phonetic alphabet interactively
Frequently asked questions
What is the NATO phonetic alphabet used for?
The NATO phonetic alphabet assigns a unique code word to each letter (Alfa, Bravo, Charlie… Zulu) so that spelled-out information cannot be misheard over radio or telephone. It is the standard for aviation, military, maritime, and emergency communications, and it is equally useful for reading out serial numbers, license plates, or booking codes on a noisy phone line.
How do I spell my name using the NATO alphabet?
Type your name into the converter and each letter is replaced by its code word. For example, ANA becomes Alfa November Alfa. When speaking, say the code words clearly one after another; the listener writes down the first letter of each word to reconstruct your name.
Why is 9 pronounced Niner in the NATO alphabet?
Nine is pronounced Niner to avoid confusion with the German word nein (no) and with the digit five, which can sound similar over degraded radio channels. Similar adjustments exist for other numbers in aviation usage, such as pronouncing 3 as tree and 5 as fife.
Is it Alfa or Alpha, and Juliett or Juliet?
The official ICAO spellings are Alfa and Juliett. Alfa is spelled with an f so non-English speakers do not misread ph, and Juliett has a double t so French speakers pronounce the final t. Both alternate spellings are widely understood, but the official versions are used in aviation documents.
Does the NATO alphabet cover numbers and punctuation?
Yes for numbers: digits 0–9 have spoken words (Zero, One, Two… Niner). Punctuation has limited coverage in radio practice — a hyphen is spoken as dash and a period as stop — but there is no full standard set for symbols, so this converter focuses on letters and digits.