Video File Size Calculator

Calculate video file sizes by format, resolution, duration, and compression

Calculate Video File Size

Total duration: 0h 1m 0s

Compression ratio: 2.0%

Video File Size Results

Compressed File Size (Decimal)
223.95 MB
Compressed File Size (Binary)
213.57 MiB
Data Rate
29.86 Mbps
Total Frames
1,800

Compression Analysis

Uncompressed Size:
11.20 GB
Space Saved:
10.97 GB (98.0%)
Compression Ratio:
50.0:1

Frame Size: 6.22 MB per frame | Resolution: 1920×1080 | Total Pixels: 20,73,600

Storage Recommendations

📁 For 1 minute video: Need ~223.95 MB storage space
💿 DVD capacity (4.7 GB): Can store ~20 videos of this length
📀 Blu-ray capacity (25 GB): Can store ~111 videos of this length
☁️ Cloud upload time (10 Mbps): ~3 minutes

Example Calculations

1 Minute 1080p H.264 Video

Resolution: 1920×1080 (Full HD)

Frame Rate: 30 fps

Color Depth: 24-bit RGB

Total Frames: 60 seconds × 30 fps = 1,800 frames

Frame Size: 1920 × 1080 × 24 ÷ 8 = 6.22 MB per frame

Uncompressed: 1,800 × 6.22 MB = 11.2 GB

H.264 Compressed: 11.2 GB × 2% = ~224 MB

2 Hour 4K Movie

Resolution: 3840×2160 (4K UHD)

Duration: 120 minutes

H.265 Format: Modern compression for 4K

Expected Size: 15-25 GB (streaming quality)

Blu-ray Quality: 50-100 GB (uncompressed/lightly compressed)

Video Format Guide

H.264/AVC

Most compatible, good compression, widely supported

H.265/HEVC

Better compression than H.264, ideal for 4K content

ProRes

Professional editing codec, larger files but better quality

Uncompressed

Raw video data, largest file size but no quality loss

Resolution Comparison

480p (SD)720×480
720p (HD)1280×720
1080p (Full HD)1920×1080
1440p (2K QHD)2560×1440
4K UHD3840×2160
8K UHD7680×4320

Video Tips

H.264 is the most compatible format for web and mobile

H.265 reduces file size by ~50% compared to H.264

Higher frame rates increase file size proportionally

4K video requires ~4× more storage than 1080p

ProRes is ideal for professional editing workflows

Understanding Video File Sizes

How Video File Size is Calculated

Video file size depends on several key factors: resolution (width × height), frame rate (frames per second), color depth (bits per pixel), duration, and compression format. The basic formula for uncompressed video is:

File Size = Duration × Frame Rate × Frame Size

Frame Size = Width × Height × Color Depth ÷ 8

Compression Impact

  • Uncompressed video files are extremely large
  • Modern codecs achieve 50:1 to 100:1 compression ratios
  • Higher compression reduces quality but saves storage

Factors Affecting File Size

Resolution

Higher resolutions (4K vs 1080p) exponentially increase file size. 4K has 4× more pixels than 1080p.

Frame Rate

Doubling frame rate (30fps to 60fps) roughly doubles file size. Higher frame rates provide smoother motion.

Codec Efficiency

Modern codecs like H.265 achieve better compression than older formats like MPEG-2, reducing file sizes significantly.

MB vs MiB: Understanding the Difference

There are two different unit systems for measuring digital storage:

Decimal (SI) Units

  • 1 KB = 1,000 bytes
  • 1 MB = 1,000,000 bytes
  • 1 GB = 1,000,000,000 bytes
  • Used by storage manufacturers and operating systems

Binary Units

  • 1 KiB = 1,024 bytes
  • 1 MiB = 1,048,576 bytes
  • 1 GiB = 1,073,741,824 bytes
  • Used in computer memory and some applications