ISO 639 Language Lookup
ISO 639 Language Lookup is a free online lookup that helps you look up a language by ISO 639-1 alpha-2, ISO 639-2/3 alpha-3, or by name fragment. ISO 639 Language Lookup uses 1 input field, returns 7 output values, and runs in your browser on the device.
Key facts
- Inputs
- 1 field: Code or name
- Outputs
- 7 values: Alpha-2 (ISO 639-1), Alpha-3 (terminological), Alpha-3 (bibliographic), Name, Native name, Language family, and Writing direction
- Runtime
- your browser on the device
- Mode
- Lookup
- Privacy
- Files and text stay in the browser session.
- Cost
- $0, no account required
How to use ISO 639 Language Lookup
- 1
Paste or fill in the input
Enter your text or values into the input fields on the page.
- 2
Run the utility
Click Compute to run the utility in your browser and review the result.
- 3
Copy the output
Copy the output value you need from the result panel.
ISO 639 Language Lookup details
First, enter Code or name in ISO 639 Language Lookup. Next, review Alpha-2 (ISO 639-1), Alpha-3 (terminological), Alpha-3 (bibliographic), Name, Native name, Language family, and Writing direction. Additionally, ISO 639 Language Lookup uses 1 input field and 7 output blocks so the result is easy to scan and copy.
Searches a curated list of ~150 widely-spoken languages; the top ~100 by speakers plus all six UN official languages and major regional languages. Returns the ISO 639-1 alpha-2 code, ISO 639-2/T (terminological) alpha-3 code, the ISO 639-2/B (bibliographic) variant when it differs, the English name, the native (endonym) name, the language family and writing direction (LTR / RTL / TTB). Useful for product engineers building locale pickers, content teams tagging translations, and i18n developers validating BCP-47 tags. Match strategy: 2 chars → alpha-2 exact; 3 chars → alpha-3 exact (terminological or bibliographic); longer → case-insensitive substring on name or nativeName. Runs entirely in your browser; your data is never sent anywhere.
Common searches
- iso 639 language codes
- language code lookup
- iso 639-1
- iso 639-2
- iso 639-3
- language code to name
Related tools
Tools that work with the same formats — most users open one of these next.
ISO 4217 Currency Lookup
Look up a currency by ISO 4217 code (alpha or numeric) or by name fragment.
ISO 3166 Country Lookup
Look up a country by ISO 3166-1 alpha-2, alpha-3, numeric code, or by name fragment.
MCC Lookup
Look up an ISO 18245 Merchant Category Code by 4-digit code or by name fragment.
EMV Tag Lookup
Search the EMV / ISO 7816 tag dictionary by hex tag or by name fragment.
BIN / IIN Lookup
Look up a card BIN (Bank Identification Number) to identify scheme, issuer, country and type.
Track 1 Decoder
Decode an ISO 7813 Track 1 magstripe string into PAN, cardholder name, expiry and service code.
Frequently asked
What is ISO 639 Language Lookup?
ISO 639 Language Lookup is a free online lookup that helps you look up a language by ISO 639-1 alpha-2, ISO 639-2/3 alpha-3, or by name fragment. ISO 639 Language Lookup uses 1 input field, returns 7 output values, and runs in your browser on the device.
What inputs and outputs does ISO 639 Language Lookup use?
ISO 639 Language Lookup uses 1 input field: Code or name. ISO 639 Language Lookup returns 7 output values: Alpha-2 (ISO 639-1), Alpha-3 (terminological), Alpha-3 (bibliographic), Name, Native name, Language family, and Writing direction.
Do my files and data stay private?
Yes. ISO 639 Language Lookup runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.
How do I use ISO 639 Language Lookup?
Open ISO 639 Language Lookup, paste or fill in the input fields, and the result updates instantly. ISO 639 Language Lookup runs in your browser with no upload and no waiting.
Which browsers does ISO 639 Language Lookup support?
Any modern browser works in Chrome, Firefox, Safari, and Edge on desktop and mobile. ISO 639 Language Lookup uses standard web APIs and does not require any plugin, extension, or sign-up.