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← Main Ratio Hub Instagram Feed Portrait
📐 Pre-Locked Ratio Engine • 0.8:1

4:5 Dimension Calculator

4:5 (0.8:1) is the tallest supported portrait format in the Instagram feed, giving creators maximum vertical screen space and higher engagement.

Normalized Ratio
4:5
0.8:1 (0.8000)
🔒

Locked 4:5 Dimension Solver

Ratio Locked (1:0.80)

Type any Width or Height below. The corresponding dimension automatically recalculates to keep the exact 4:5 ratio without distortion.

W
H
Total Resolution: 1080 × 1350 px
Image Density: 1.46 MP

🎯 Where is 4:5 Used?

4:5 (0.8:1) is the tallest supported portrait format in the Instagram feed, giving creators maximum vertical screen space and higher engagement.

  • ✓ Instagram feed portrait photography and carousels
  • ✓ Facebook timeline sponsored posts
  • ✓ Fashion and model lookbook mobile photography
  • ✓ Pinterest organic product pins
  • ✓ Mobile vertical digital advertising banners

Physical Shape Visualizer

4:5 Proportions
4:5
1080 × 1350 px
Fraction 4:5
Decimal 0.8:1

📊 Standard 4:5 Resolutions

Official and common pixel dimensions for the 4:5 aspect ratio

1-Click Load into Calculator
Resolution Name Dimensions (W × H) Megapixels Typical Usage Actions
Instagram Portrait Master 1080 × 1350 px 1.46 MP The exact recommended dimensions for Instagram feed
2K Hi-Res Portrait (4:5) 1600 × 2000 px 3.20 MP High-density export for print or retouched photography
Retina 4:5 Master 2160 × 2700 px 5.83 MP Archival master resolution with 2x pixel density
Web Preview Portrait 720 × 900 px 0.65 MP Lightweight compressed preview for fast mobile browsing
Thumbnail 4:5 480 × 600 px 0.29 MP Compact grid card asset

🔗 Explore Other Popular Aspect Ratios

Compare with other standard digital screen, photo, and cinema aspect ratios

16:9 Universal Standard
16:9 Aspect Ratio
1.78:1 • Landscape
9:16 Viral Mobile
9:16 Aspect Ratio
0.56:1 • Portrait
4:3 Classic Standard
4:3 Aspect Ratio
1.33:1 • Landscape
1:1 Square Feed
1:1 Aspect Ratio
1.0:1 • Square
21:9 Ultrawide Desktop
21:9 Aspect Ratio
2.33:1 • Ultrawide
3:2 Classic Photo
3:2 Aspect Ratio
1.5:1 • Landscape
2.39:1 Anamorphic Cinema
2.39:1 Aspect Ratio
2.39:1 • Ultrawide
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4:5 Aspect Ratio Calculator — Instagram Portrait Post Dimensions

🧮 Calculators

Calculate pixel dimensions for the 4:5 vertical portrait format, the optimal size for maximizing screen real estate on Instagram feeds.

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Frequently Asked Questions

Quick answers about controls, features, accuracy, and local browser saving.

What is the 4:5 aspect ratio in pixels?
The 4:5 ratio means that for every 4 units of width, there are 5 units of height. Common pixel resolutions for 4:5 include 1080 × 1350, 1600 × 2000, 2160 × 2700. Any resolution where Width / Height ≈ 0.80 maintains this exact proportional shape.
Where is the 4:5 aspect ratio most commonly used?
4:5 (0.8:1) is the tallest supported portrait format in the Instagram feed, giving creators maximum vertical screen space and higher engagement. Typical use cases include Instagram feed portrait photography and carousels, Facebook timeline sponsored posts, Fashion and model lookbook mobile photography, Pinterest organic product pins, Mobile vertical digital advertising banners.
How do I calculate missing dimensions for 4:5?
To find the height for any given width in 4:5, divide the width by 0.8000: Height = Width / 0.8000. Conversely, to find the width from a known height, multiply by 0.8000: Width = Height × 0.8000.
What is the decimal equivalent of 4:5?
The decimal equivalent of 4:5 is 0.8:1 (or approximately 0.8000). This decimal multiplier represents the width relative to a normalized height of 1.
How can I resize an image or video without stretching?
Use our pre-locked calculator above. Simply type your desired target width or height, and the corresponding dimension will be calculated automatically to preserve the exact 4:5 proportion with zero stretching or distortion.

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