1080 x 1920 with Square Pixels (1.0).1080 x 1350 (4:5) for portrait images to cover 80% more screen area than square.Tired of confusing math formulas, distorted stretched videos, or annoying paywalls just to convert 16:9 landscape footage into vertical 9:16 reels? WebToolHub's Free YouTube Shorts & Aspect Ratio Calculator lets you compute exact width and height pixel boundaries instantly with no email signup and no login required.
Re-purposing a horizontal 16:9 YouTube video into a vertical 9:16 Short or 4:5 Instagram Carousel requires calculating precise pixel boundaries. Exporting with the wrong aspect ratio results in fuzzy black pillarbox bars or stretched subjects that immediately trigger algorithmic viewer drop-off. Creators searching for viptools, viptool, or viptoolhub rely on this resolution calculator to export frame-perfect content.
A 4:5 portrait post (1080x1350) takes up significantly more vertical screen space on mobile phones than a 1080x1080 square. This prevents viewers from seeing competing posts above or below yours while they scroll, directly increasing engagement.
Yes, it is 100% free with no registration or limits. All computations execute instantaneously in your browser.