
Converter World: IPA Phonetic
Grammar Checker & PDF to Word
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Free
In-App Purchases
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About
See how English is pronounced in IPA, check your grammar and convert PDF and Word files, all in one app. Most tools are free and need no account.
TEXT TO IPA
Type or paste English text to get its phonetic transcription in the International Phonetic Alphabet (IPA). Transcriptions follow American English pronunciation. Show the IPA under or over each word, or the whole sentence above its transcription, then copy it into your notes.
PRONUNCIATION PRACTICE
Practice every English sound in an American or British accent, from single words to long sentences. Record yourself and get a score out of 100 for the sound you are practicing. Practice is free and needs no account. Sign in to take level tests, which cost credits; your first pass of a level 4 or 5 Hard test earns points.
GRAMMAR CHECKER
Paste English text and tap Improve Grammar to get a corrected version for free. Turn on Compare all models to see each model's result side by side. Turn on Use AI for a second pass: it runs on your device with Apple's model where your device supports it, or on our servers, which needs sign-in and uses 1 credit.
PDF TO WORD AND WORD TO PDF
• Convert a PDF to a Word document (DOCX), or a DOCX file to PDF, up to 100 MB.
• Compress a PDF at balanced, high-quality or maximum settings and see how much space you saved.
• Paste a CSV, Markdown or HTML table and export it as a PNG image.
TEXT TO SPEECH
Listen to your text with your device's voice, always free. Sign in for AI voices and MP3 files you can save or share: short texts are free and longer ones use credits. AI voices offer 30 language options, including English (US, UK, Australia and India) and Vietnamese. Device voices depend on the voices installed on your device.
MORE TOOLS
• Live Substitution: set short triggers that expand into full text as you type in the app's scratchpad.
• Live captions: watch your speech appear as text. Your triggers work there too.
• Vietnamese lunar calendar with the zodiac, Can Chi year names and holidays.
• Workspace: two tools on one screen, one above the other, or side by side on a wide landscape screen.
ENGLISH AND VIETNAMESE
The app follows your device's language. You can also choose English or Vietnamese in More > Language.
CREDITS, NOT SUBSCRIPTIONS
AI grammar checks on our servers, longer AI voice texts and pronunciation level tests use credits, sold as one-time in-app purchases. New accounts start with 10 credits. There is no subscription and there are no ads.
INTERNET AND PRIVACY
IPA, pronunciation practice, grammar checks, PDF conversion and compression, and AI voices need an internet connection. Practice recordings are scored on our servers and not kept. AI voice and Download MP3 send your text only after you tap Allow. The app contains no advertising, attribution or analytics software from other companies. Privacy policy: https://converterworld.org/#privacy
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What's New in Converter World
1.0.4
October 28, 2026
• Open a tool straight from Siri, Spotlight, the Shortcuts app or the Action button: Text to IPA, Pronunciation Practice, Grammar Checker, PDF to Word and Text to Speech. Needs iOS 16 or later (Spotlight: iOS 17). • Now in Japanese and Korean. The app follows your device's language, and you can also choose one in More > Language.
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Subscriptions & In-App Purchases
$4.99
Starter Pack
50 credits for AI grammar and speech.





