Calcolatore Aspect Ratio
Larghezza + Altezza → Rapporto
16:9
Rapporto + Dimensione → Altra
Altezza calcolata
1080 px
Domande Frequenti
Tutto quello che devi sapere sull'aspect ratio
Cos'è l'aspect ratio?
L'aspect ratio (rapporto d'aspetto) è il rapporto tra la larghezza e l'altezza di un'immagine o schermo. Es: 16:9 significa che per ogni 16 unità di larghezza ci sono 9 unità di altezza. È fondamentale per evitare distorsioni nel ridimensionamento.
Quali sono i rapporti più comuni?
16:9 è lo standard per TV e monitor moderni. 4:3 era lo standard per vecchi TV e monitor. 1:1 è il formato quadrato usato su Instagram. 9:16 è il formato verticale per storie/reels. 21:9 è il formato ultrawide per cinema.
Come si mantiene l'aspect ratio nel ridimensionamento?
Per ridimensionare mantenendo il rapporto: nuova_altezza = nuova_larghezza × (altezza_originale / larghezza_originale). La formula inversa si usa per trovare la larghezza. Questo tool lo calcola automaticamente.
How is an aspect ratio worked out from width and height?
The aspect ratio comes from dividing width and height by their greatest common divisor. From 1920 by 1080 the calculator returns 16:9, because both numbers divide by 120.
How do I find the height and keep the proportions?
With the ratio and the width known, the height comes from multiplying the width by the second number of the ratio and dividing by the first. The calculator does the arithmetic and returns the pixels.
Which aspect ratios are ready to use?
The calculator has buttons for 16:9, 4:3, 1:1, 9:16, 21:9 and 3:2. 16:9 is the format of televisions and monitors, 9:16 the vertical one of stories and reels, 1:1 the square, 21:9 the ultrawide.
Does my data stay private?
Yes, and not because we promise it: this tool runs entirely inside your browser. What you type or upload never leaves your device, so it never reaches a server of ours and there is nothing we could keep, read or lose. You can check it yourself: open the page, disconnect from the internet, and the tool keeps working.
Do you store what I enter?
No. There is no database behind this tool: we do not store your files, your text or your results. When you close the tab nothing is left — not here with us, because it never arrived, and not anywhere else.
Do you profile me? Are you GDPR compliant?
We do not profile you: there is no account to create, we never ask for your email to use a tool, and we keep no profile of what you do. We are an Italian company and we work under the GDPR and the other European rules, with the privacy notice and the consent request in plain sight. One thing we say in full rather than hiding it behind a slogan: the ads on the page are Google's, and Google may use cookies to personalise them. You decide from the consent banner: if you say no the ads stay, but they are not personalised, and the tool works exactly the same.
If it is free, how do you make money?
From the ads on the page, and that is all. We do not sell your data, there is no hidden paid plan, there is no limit that eventually asks for your card, and you do not have to sign up. The ads pay for the servers and for the time we spend writing the tools: that is how we can keep them open to everyone.