Portrait Aspect Ratio Calculator
Calculate perfect portrait dimensions and resize images while maintaining aspect ratio
Calculate Portrait Aspect Ratio
✅ Portrait orientation (height > width)
Enter the known dimension to calculate the other
Calculated Dimensions
Ratio: 9:16
Decimal: 0.5625
Orientation: Portrait
Type: Preset
Width = Height × Ratio
Width = 500 × 0.5625
Width = 281.25 pixels
Visual Representation
Common Use Cases
Example Calculation
Instagram Story Example
Target: Create an Instagram Story (9:16 aspect ratio)
Known dimension: Height = 1920 pixels
Need to find: Width for 9:16 ratio
Calculation
Aspect ratio = Width ÷ Height = 9 ÷ 16 = 0.5625
Width = Height × 0.5625
Width = 1920 × 0.5625 = 1080 pixels
Result: 1080 × 1920 pixels
Common Portrait Ratios
Portrait Photography Tips
Portrait orientation is height > width
9:16 is perfect for vertical social media
2:3 and 3:2 are traditional photo ratios
Maintain ratio to avoid image distortion
Consider your final output medium
Understanding Portrait Aspect Ratios
What is Portrait Aspect Ratio?
Portrait aspect ratio refers to the proportional relationship between width and height of an image where the height is greater than the width. This vertical orientation is commonly used in photography, social media, and print media.
Why is it Important?
- •Maintains image quality when resizing
- •Prevents distortion in photos and videos
- •Ensures proper display across different platforms
- •Optimizes for specific use cases and mediums
Calculation Formula
Aspect Ratio = Width ÷ Height
For portraits: Height > Width (ratio < 1.0)
Resize Formulas
Width = Height × (Width Ratio ÷ Height Ratio)
Height = Width ÷ (Width Ratio ÷ Height Ratio)
Social Media
- • Instagram Stories: 9:16
- • TikTok: 9:16
- • Instagram Posts: 4:5
- • Pinterest: 2:3
Photography
- • DSLR Standard: 3:2
- • Film 35mm: 2:3
- • Medium Format: 3:4
- • Large Format: 8:10
Print Sizes
- • 4×6 inches: 2:3
- • 5×7 inches: 5:7
- • 8×10 inches: 4:5
- • 11×14 inches: 11:14