Calcolatore Rapporto d'Aspetto
Calcolatore gratuito del rapporto d'aspetto. Calcola i rapporti da larghezza e altezza, quindi ridimensiona uno dei due assi per mantenere lo stesso rapporto. Per immagini, video, design.
Runs in your browserUpdated Apr 26, 2026
Aspect ratio calculator
Resize to fit a new width
Ratio
16:9
Decimal
1.7778
Domande frequenti
›How do I calculate aspect ratio?
Divide width by height, then simplify the resulting fraction. We do it for you and show common-name matches (16:9, 4:3, etc.).
›Can I resize keeping the ratio?
Yes — enter a new width and the height auto-adjusts (or vice versa) to maintain the original ratio.
›What's the most common video ratio?
16:9 for landscape (HD/4K video, YouTube), 9:16 for vertical (TikTok, Instagram Reels), 1:1 for square (Instagram feed).
›Is the calculator free?
Yes — fully free, no signup.