Web Dev Tools
Video Downloader
Download videos from popular platforms. Free online video downloader for YouTube, Vimeo, Facebook, and more. Multiple quality options available.
Use Video Downloader to get instant results without uploads or sign-ups. Everything runs securely in your browser for fast, reliable output.
Your results will appear here.
About this tool
Our Video Downloader Calculator helps you understand video download specifications including file sizes, quality options, and format details for various video platforms.
Different video qualities and formats result in different file sizes. This tool helps you choose the optimal balance between quality and file size.
Always respect copyright laws and terms of service when downloading videos. Only download content you have rights to or that is freely available.
Usage examples
YouTube HD Download
Download a 10-minute video in 1080p
Input: 10-minute video, 1080p MP4 → Output: ~200 MB file size
4K Video Download
Download high-quality 4K content
Input: 5-minute video, 4K MP4 → Output: ~500 MB file size
How to use
- Enter the video URL from supported platforms
- Click "Analyze Video" to fetch available formats
- Choose your preferred quality and format
- View estimated download size and specifications
Benefits
- Calculate video download sizes
- Compare quality options
- Choose optimal format
- Estimate download time
- Plan storage requirements
- Multiple resolution support
- Audio-only option available
FAQs
What video quality should I download?
1080p (Full HD) offers excellent quality for most uses and reasonable file size. Use 4K (2160p) for large displays, video editing, or archival. 720p is good for mobile devices and saves storage. 480p for slow internet or minimal storage. Consider your screen size, storage space, and internet speed.
What is the difference between MP4 and WebM?
MP4 (H.264/H.265) is universally compatible with all devices, TVs, and editors - recommended for most users. WebM (VP9) offers 20-30% better compression but limited device support (mainly web browsers). AVI is outdated with large files. MKV supports multiple audio/subtitle tracks but less compatible. Stick with MP4 for maximum compatibility.
Can I download audio only?
Yes, audio-only downloads (MP3 or M4A format) are 10-20x smaller than video files. Perfect for music, podcasts, or lectures. MP3 is universally compatible. M4A (AAC) offers better quality at same bitrate. Typical sizes: 3-5 MB per minute for music, 1-2 MB for speech.
Is it legal to download online videos?
Legality depends on copyright and terms of service. Legal: Your own content, Creative Commons videos, fair use educational content, platform allows download. Illegal: Copyrighted content without permission, violating platform ToS, commercial use without license. Many platforms prohibit downloading in their terms. Respect copyright laws and creator rights.
Why is the file size larger than expected?
Higher quality = larger files. 4K is 4x bigger than 1080p. Frame rate matters: 60fps is 2x bigger than 30fps. Bitrate affects size - higher bitrate = better quality but larger. Compression: H.265 (HEVC) is 50% smaller than H.264 but needs modern devices. Audio track adds 1-5 MB per minute.
How much storage do I need for videos?
1 hour of video: 4K (7-15 GB), 1080p (2-4 GB), 720p (1-2 GB), 480p (500 MB-1 GB), Audio only (50-100 MB). Plan storage accordingly. Use cloud storage for large collections. Delete watched videos. Compress with HandBrake if needed. External drives for archives.
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