Tính Tỉ Lệ Khung Hình & Mật Độ Điểm Ảnh (Aspect Ratio & PPI)
Tính tỉ lệ màn hình, quy đổi kích thước ảnh/video chuẩn không bị méo và tính mật độ điểm ảnh PPI (Pixels Per Inch) cho màn hình máy tính, điện thoại.
Original Dimensions
Calculate New Proportional Dimensions
Maintain Aspect Ratio (16:9)Display Ratios & Pixel Densities Explained
What is an Aspect Ratio?
An aspect ratio is the proportional relationship between an image's width and height. Standard 16:9 is universal for high-definition streaming, while 9:16 dominates mobile short-form video.
Why does PPI (Pixels Per Inch) Matter?
PPI measures how tightly packed pixels are on a screen. Higher PPI produces sharper text and crisper images at close viewing distances, eliminating visible pixelation.
Responsive Scaling & Resizing
When designing responsive websites or cropping banners, locking aspect ratios prevents awkward stretching, squishing, and letterboxing artifacts.
Frequently Asked Questions
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