DESIGN, VIDEO & DISPLAYS

Aspect Ratio & Screen Dimension Calculator

Calculate exact display and video aspect ratios (16:9, 9:16 Reels/TikTok, 21:9 ultrawide, 4:3), resize dimensions without distortion, and compute pixel density (PPI).

Width in Pixels

Height in Pixels

Resoluções Comuns

Screen Diagonal Size (inches)

Simplified Aspect Ratio

16:9

1920 × 1080 pixels (1.78:1)

Pixel Density (PPI):

82 PPI

Physical Screen Dimensions:

23.5" × 13.2" (59.7 × 33.5 cm)

Visual Aspect Ratio Canvas Preview

16:9

How it works

Select mode: find aspect ratio from dimensions OR resize dimensions with a locked ratio.

Input width and height in pixels (or click resolution presets like 1080p, 4K, Ultrawide).

Inspect simplified ratio, decimal ratio, pixel density (PPI), physical screen dimensions, and visual canvas preview.

Frequently asked questions

What is the standard aspect ratio for modern video and monitors?

16:9 is the universal standard for YouTube videos, streaming services, and high-definition monitors (1920×1080 FHD, 2560×1440 QHD, and 3840×2160 4K).

What is the resolution for Instagram Reels and TikTok?

Vertical short-form video uses a 9:16 aspect ratio, standardly produced at 1080×1920 pixels.

Is this tool free?

Yes. The site is supported by ads, so you never pay or need to create an account.

Does it work on mobile?

Yes. The page adapts to your screen and does not require installing any app.