Convert ARB to TSV online
Upload a Flutter ARB file and download it as TSV. Translation keys, plurals and placeholders are preserved. Free, no account needed.
Pick the source format or let the converter detect it from the file.
Used when the source format holds one language per file. Also used as the source language for XLIFF output.
Choose the format you want to download.
Tab-separated values work like CSV but avoid escaping problems with commas inside translations. One row per key, one column per language.
Need it the other way round? Convert TSV to ARB.
From: Flutter ARB
Application Resource Bundle files are JSON documents with ICU message syntax and optional @metadata entries. Flutter's gen_l10n tool turns them into typed Dart localization classes.
Used by: Flutter, Dart intl, gen_l10n. One language per file. Read the ARB format guide.
{
"@@locale": "en",
"hello.world": "Hello World!",
"@hello.world": {
"description": "Hello world message"
}
"my_address": "Address",
}To: TSV
Tab-separated values work like CSV but avoid escaping problems with commas inside translations. One row per key, one column per language.
Used by: Excel, Google Sheets, scripts. All languages in one file. Read the TSV format guide.
key english polish
welcome Welcome! Witajcie
about-us About Us O nas
register Register RejestracjaHow to convert ARB to TSV
- Drop your .arb file into the converter above, or paste its content.
- Confirm the language of the file. It is guessed from the file name, for example
de.jsonormessages_pt-BR.properties. - Click Convert. You get a single .tsv file with all languages.
- Preview the result, copy it or download the file.
What changes between ARB and TSV
- TSV keeps all languages together. A single ARB file produces a TSV file with one language column; upload more files to a SimpleLocalize project to merge languages.
Convert and translate in one place
If you need the TSV file in more languages, the fastest route is a free SimpleLocalize project: import the ARB file, add languages, run auto-translation with DeepL, Google Translate, OpenAI, Claude or Gemini, and download the result as TSV. The CLI does the same from CI with upload and download commands, so the conversion becomes part of your build. See also translating ARB files.
Frequently asked questions
Is the converter free?
Yes. There is no signup and no limit on the number of conversions beyond a few requests per second.
Are my files stored?
No. The file is parsed in memory, converted and returned in the same request. Nothing is written to disk or a database.
What about plurals and placeholders?
Plural forms are normalized to ICU message syntax and written back in the native form of TSV. Placeholders are kept, and Apple and Android specific syntax is translated between platforms. Read more in the pluralization guide.
Convert ARB to other formats
Translate your TSV files
- Import ARB or TSV files into a free project
- Auto-translate with DeepL, Google, OpenAI, Claude or Gemini
- Download in any of the supported formats or publish to the CDN