Scale resolutions and screen sizes while preserving aspect ratio.
Scale resolutions and screen sizes while preserving aspect ratio.
Enter values above and click Calculate — results will appear here with the formula explained.
Aspect ratio locks the shape of an image independent of its size. Respecting it during resizing prevents the stretched, squashed distortion that screams amateur edit — one dimension changes, the calculator derives the other.
Standard ratios dominate because hardware standardized around them: 16:9 owns video and monitors, 4:3 lingers in legacy content and tablets, 1:1 rules social feeds, 9:16 owns vertical phone video. Knowing your destination's native ratio before shooting saves painful cropping later.
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Aspect ratio locks the shape of an image independent of its size. Respecting it during resizing prevents the stretched, squashed distortion that screams amateur edit — one dimension changes, the calculator derives the other. Formula: new-height = new-width × (original-height ÷ original-width)
Aspect Ratio Calculator: Scale resolutions and screen sizes while preserving aspect ratio. Formula: new-height = new-width × (original-height ÷ original-width). Example: Scaling 1920×1080 down to 1280 wide: 1280 × (1080÷1920) = 720 exactly — the classic 1080p→720p conversion preserving 16:9 perfectly.
Scale resolutions and screen sizes while preserving aspect ratio. Formula: new-height = new-width × (original-height ÷ original-width)
| Field | What to enter |
|---|---|
| Original width | e.g. 1920 |
| Original height | e.g. 1080 |
| New width (optional) | e.g. 1280 |
| New height (optional) | e.g. 720 |
All fields use the exact formulas shown below — results include step-by-step breakdowns you can verify by hand.
Aspect ratio locks the shape of an image independent of its size. Respecting it during resizing prevents the stretched, squashed distortion that screams amateur edit — one dimension changes, the calculator derives the other.
Standard ratios dominate because hardware standardized around them: 16:9 owns video and monitors, 4:3 lingers in legacy content and tablets, 1:1 rules social feeds, 9:16 owns vertical phone video. Knowing your destination's native ratio before shooting saves painful cropping later.
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AdSense ready — add NEXT_PUBLIC_GOOGLE_ADSENSE_PUBLISHER_ID
Scaling 1920×1080 down to 1280 wide: 1280 × (1080÷1920) = 720 exactly — the classic 1080p→720p conversion preserving 16:9 perfectly.
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AdSense ready — add NEXT_PUBLIC_GOOGLE_ADSENSE_PUBLISHER_ID