Widescreen ratio calculator

16:9 Aspect Ratio Helper

16:9 is the standard widescreen shape for video, presentation slides, livestream layouts, and many thumbnails.

16:9

Live preview follows the selected ratio.

Calculator

Calculate The Missing Dimension

Choose a ratio, enter width or height, and the calculator fills the matching dimension while keeping the image or video proportional.

Simplified ratio 16:9
Decimal 1.7778
Current size 1920 x 1080

Common 16:9 Aspect Ratio Sizes

Use these sizes as starting points. Exact platform requirements can change, so treat the calculator as the proportional reference and check the final upload screen before publishing.

Use case Pixel size Ratio
HD 1280 x 720 16:9
Full HD 1920 x 1080 16:9
QHD 2560 x 1440 16:9
4K UHD 3840 x 2160 16:9

Generated Size Table

The table below updates when you choose a new ratio. It is useful for planning responsive images, thumbnails, and video exports.

Width Matching height Size

Practical Tips

Use 16:9 for most horizontal video exports.

Avoid cropping portraits into 16:9 without checking the subject.

For slides, keep text inside a safe margin.

Visual Ratio Reference

This reference chart shows how common frames compare. Use it when deciding whether a creative should be wide, square, portrait, or ultrawide.

Comparison chart for common aspect ratios including 16:9, 9:16, 1:1, 4:5, and 21:9