Utility Tools
YouTube Thumbnail Size Calculator
Calculate the correct dimensions for YouTube thumbnails. The standard size is 1280×720 pixels (16:9 ratio). Enter your desired width or height to get the proportional counterpart.
Common Presets
Original Dimensions
Aspect Ratio
16:9
Calculate New Size
Enter either width or height — the other will be calculated automatically.
YouTube Thumbnail Requirements
- Recommended size: 1280×720 pixels (minimum 640px wide)
- Aspect ratio: 16:9 (the standard YouTube player ratio)
- File format: JPG, PNG, GIF, or WebP
- Maximum file size: 2MB
- Best practice: Use high contrast, readable text, and a clear focal point