Spell it out
Paste or type half-width English letters and digits. Other characters remain visible but have no reading in v1.
ICAO/NATO radiotelephony spelling alphabetICAO/NATO table. The official spellings are Alfa and Juliett.
Characters and readings
I/l/1, O/0, S/5, B/8, and Z/2 get an extra outline and marker. Zero uses a slashed-zero form.
Your spelled characters will appear here as you type.
Say each character clearly
Spell Characters breaks an ASCII code into individual, large characters and pairs each one with a phonetic reading. It is built for the moments when a password, license key, or serial number must be passed accurately over a phone call or in person.
Uppercase letters, lowercase letters, and digits have distinct labels and colours. Frequently confused shapes receive an additional outline, so the distinction does not rely on colour alone.
Your text stays on this device
The text is processed in the browser as you type.
- No text is uploaded.
- No account is required.
- The spelling tables are static data bundled with the app.
- It remains usable after the app is cached for offline use.
This is a display aid, not a password manager: avoid sharing a secret with anyone who should not receive it. Read the source.
How to use it
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Paste the code
Enter the half-width English letters and digits you need to communicate.
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Choose a table
Select the phonetic code table that fits the person or context you are speaking with.
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Read each card
State the visible character, its type, and the supplied phonetic word in order.
FAQ
Does this read characters aloud?
No. This version intentionally provides visual readings only; it does not use the Web Speech API.
Which characters are supported?
Version 1 is designed for half-width English letters and digits. Other pasted characters are shown as unsupported rather than silently removed.
Is the Spanish table a standard?
No. Spanish has no single official spelling standard. The selected table uses a widespread conventional “A de Antonio” style and notes that regional variation exists.