What Is the NATO Phonetic Alphabet?
The NATO phonetic alphabet (formally the International Radiotelephony Spelling Alphabet) is a set of 26 code words that represent each letter of the English alphabet. Developed by the International Civil Aviation Organization (ICAO) and adopted by NATO, it eliminates ambiguity when spelling words over radio, telephone, or noisy communication channels.
Each code word was chosen to be easily distinguishable from all others, even with poor audio quality or across different languages and accents. The alphabet is used worldwide by military, aviation, maritime, emergency services, and IT professionals.
How to Use This Tool
Choose Your Alphabet
Select from NATO/ICAO, APCO (Police), Western Union, or Royal Navy phonetic alphabets using the dropdown.
Enter Your Text
Type directly, paste content, or upload/drag a .txt file. Use the mode toggle to switch between encoding text and decoding phonetic words.
Read the Output
Each character is converted to its phonetic code word with pronunciation guide. Letters, numbers, and symbols are color-coded for clarity.
Copy or Download
Use Copy to copy the output to clipboard, Download to save as a .txt file, or Clear to reset.
Features Explained
Multiple Phonetic Alphabets
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Switch between four phonetic alphabets: NATO/ICAO (international standard), APCO (used by US police), Western Union (telegraphy), and Royal Navy (WWII-era). Each has its own set of code words optimized for its communication context.
Reverse Conversion
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Switch to 'Phonetic → Text' mode to paste phonetic words (like 'Alpha Bravo Charlie') and decode them back to plain text. Supports all four alphabets and symbol names.
Pronunciation Guides
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Every code word includes its official phonetic pronunciation in capital letters (e.g., AL-FAH for Alpha, BRAH-VOH for Bravo). These help you say the words correctly, especially for non-native speakers.
Color-Coded Output
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Letters, numbers, and symbols are displayed in different colors — green for letters, amber for digits, purple for symbols — making it easy to distinguish character types at a glance.
Symbol Support
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Common symbols have standard callouts: period is 'Stop', comma is 'Comma', @ is 'At', and so on. Over 20 symbols are supported beyond the basic A-Z and 0-9.
File Upload & Drag and Drop
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Upload a .txt file using the Upload button or drag and drop a text file directly onto the input area. The file contents replace the current input text.
Who Is This Tool For?
Call Center Agents
Spell out names, addresses, and reference numbers clearly over the phone to avoid costly miscommunication.
IT Professionals
Read out serial numbers, MAC addresses, license keys, and passwords without ambiguity — especially B vs D, M vs N.
Military & Aviation
Use the standard NATO/ICAO alphabet for radio communications, flight plans, and operational messages.
Emergency Services
Communicate vehicle plates, suspect descriptions, and location codes using APCO or NATO alphabets over dispatch radio.
Students & Learners
Learn phonetic alphabets for amateur radio licensing exams, military training, or aviation courses.
Travelers
Spell your name or booking reference clearly when calling airlines, hotels, or embassies across language barriers.
NATO Phonetic Alphabet Reference
| Letter | NATO | Pronunciation | Letter | NATO | Pronunciation |
|---|---|---|---|---|---|
| A | Alpha | AL-FAH | N | November | NO-VEM-BER |
| B | Bravo | BRAH-VOH | O | Oscar | OSS-CAH |
| C | Charlie | CHAR-LEE | P | Papa | PAH-PAH |
| D | Delta | DELL-TAH | Q | Quebec | KEH-BECK |
| E | Echo | ECK-OH | R | Romeo | ROW-ME-OH |
| F | Foxtrot | FOKS-TROT | S | Sierra | SEE-AIR-RAH |
| G | Golf | GOLF | T | Tango | TANG-GO |
| H | Hotel | HOH-TEL | U | Uniform | YOU-NEE-FORM |
| I | India | IN-DEE-AH | V | Victor | VIK-TAH |
| J | Juliet | JEW-LEE-ETT | W | Whiskey | WISS-KEY |
| K | Kilo | KEY-LOH | X | X-ray | ECKS-RAY |
| L | Lima | LEE-MAH | Y | Yankee | YANG-KEY |
| M | Mike | MIKE | Z | Zulu | ZOO-LOO |
| Digit | Code Word | Pronunciation |
|---|---|---|
| 0 | Zero | ZE-RO |
| 1 | One | WUN |
| 2 | Two | TOO |
| 3 | Three | TREE |
| 4 | Four | FOW-ER |
| 5 | Five | FIFE |
| 6 | Six | SIX |
| 7 | Seven | SEV-EN |
| 8 | Eight | AIT |
| 9 | Niner | NIN-ER |
Tips for Using Phonetic Alphabets
Pause between words
When speaking phonetic code words aloud, pause slightly between each word so the listener can write down each letter before the next one.
Say 'I spell' first
Before spelling a word phonetically, say 'I spell' to alert the listener that you're about to use the phonetic alphabet. Example: 'My name is Smith, I spell: Sierra Mike India Tango Hotel.'
Use for confirmation codes
Phonetic alphabets are perfect for reading out booking references, serial numbers, and one-time codes over the phone — anywhere a single misheard letter costs time.
Niner, not Nine
In NATO standard, the digit 9 is pronounced 'Niner' (not 'Nine') to avoid confusion with the German word 'Nein' (meaning 'no').
Try different alphabets
If you work with US police, use APCO. For general international use, stick with NATO/ICAO. The Royal Navy alphabet is great for history enthusiasts and WWII re-enactors.
Practice makes perfect
Try spelling your name, address, and phone number using the phonetic alphabet until it becomes second nature. Start with the NATO version — it's the most widely recognized.
Privacy & Security
This tool runs 100% in your browser. Your text is never uploaded to any server. All conversions happen locally using static lookup tables.
Your input is stored only in your browser's local storage so it persists when you refresh the page. You can clear it at any time using the “Clear” button. No cookies are used, no analytics track your text content, and no third-party services have access to what you type.