Automatic speech recognition (ASR) tools have made it simple to turn spoken words into timed subtitles. Whether you’re creating video tutorials, webinars, or social media clips, these AI-powered generators save time and improve accessibility. Here are the top free and freemium options:

1. Capsai Auto Subtitle Generator
   Capsai uses advanced speech-to-text models to produce subtitles in English, Hindi, and Hinglish within seconds. Upload your video or paste a URL, review and edit in-browser, then download SRT/VTT files or burned-in captions.
   Link: https://capsai.co/
   
   

1. WebCaptioner
   A browser-based solution that captures live audio from any microphone. It streams real-time captions to your screen and lets you export the transcript as SRT or plain text. Ideal for live presentations and webcasts.
   Link: https://webcaptioner.com
   
   

1. Google Live Transcribe
   An Android app that converts ambient speech into text instantly. It supports offline transcription for several languages and allows you to copy and export the transcript for subtitle formatting.
   Link: https://play.google.com/store/apps/details?id=com.google.audio.hearing.visualization.accessibility.scribe
   
   

1. Otter.ai
   Designed for meetings and lectures, Otter.ai transcribes audio in real time, identifies speakers, and lets you export caption files. The free tier offers 600 minutes of transcription per month.
   Link: https://otter.ai
   
   

1. Kapwing Studio
   Kapwing combines AI transcription with a visual timeline editor. Upload any video, generate subtitles automatically, customize timing and style, then export SRT or burned-in video ready for social sharing.
   Link: https://www.kapwing.com/subtitles
   
   

1. Subtitle Bee
   An AI-driven subtitle generator that transcribes audio and translates into multiple languages. The free plan allows up to 20 minutes of processing each month and offers simple styling options.
   Link: https://subtitlebee.com
   
   

1. Aegisub with AI Plugin
   Aegisub is an open-source subtitle editor; adding an AI plugin gives you speech recognition assistance alongside detailed waveform visualization. Best for creators who need precise timing and styling control.
   Link: http://www.aegisub.org
   
   

1. VEED.io
   A one-click subtitle tool that auto-generates captions and offers styling presets. VEED.io’s free plan includes watermark-free exports for short clips, making it a solid choice for quick social videos.
   Link: https://www.veed.io

Choose the tool that fits your workflow - whether you need instant live captions, collaborative editing, or high-volume multilingual output - and start converting audio to subtitles effortlessly.