Portrait Aspect Ratio Calculator
Calculate dimensions for portrait aspect ratio (height > width). Common portrait ratios include 3:4, 2:3, and 9:16.
How to Use This Calculator
- Select whether to calculate from width or height.
- Enter the known dimension (width or height).
- The calculator displays the corresponding dimension maintaining portrait ratio (3:4).
- Use this for vertical photos, portrait displays, or portrait-oriented content.
Portrait Aspect Ratio Formula
Portrait dimensions use a height-to-width ratio:
Height = Width × 1.333...
Width = Height / 1.333... = Height × 0.75
Example: 1080 width: Height = 1080 × 1.333... = 1440. Result: 1080×1440 (3:4 portrait). 1440 height: Width = 1440 × 0.75 = 1080. Portrait means height > width, so the result is taller than wide. Common portrait ratios include 3:4, 2:3, and 9:16.
Full Description
The Portrait Aspect Ratio Calculator helps you calculate dimensions for portrait orientation (height > width). Portrait aspect ratios are used for vertical photos, phone screens, portrait-oriented displays, and vertical video content. Common portrait ratios include 3:4 (standard portrait), 2:3 (photo portrait), and 9:16 (vertical video/phone screens).
The calculator uses 3:4 as the default portrait ratio, where height is 1.333... times the width. If you know the width, height = width × 1.333... If you know the height, width = height × 0.75. Portrait means the image or display is taller than it is wide, opposite of landscape (wider than tall). Portrait orientation is ideal for vertical content, phone screens, and portrait photos.
This calculator helps you determine portrait dimensions. Enter width or height, and it calculates the corresponding dimension maintaining the portrait ratio. Use it for vertical photos, portrait displays, phone screen sizing, or portrait-oriented content. Remember, portrait means height > width—taller than wide!
Frequently Asked Questions
What is portrait aspect ratio?
Portrait aspect ratio means height > width (taller than wide). Common portrait ratios: 3:4 (0.75), 2:3 (0.667), 9:16 (0.5625). Used for vertical photos, phone screens, portrait orientation displays, and vertical video. The calculator uses 3:4 as the default portrait ratio.
How do I calculate portrait dimensions?
If you know width: Height = Width × (4/3) = Width × 1.333... If you know height: Width = Height / (4/3) = Height × 0.75. Example: 1080 width: Height = 1080 × 1.333... = 1440. 1440 height: Width = 1440 × 0.75 = 1080. The calculator does this automatically.
What are common portrait ratios?
Common portrait ratios: 3:4 (standard portrait, 0.75), 2:3 (photo portrait, 0.667), 9:16 (vertical video/phone, 0.5625), 1:2 (very tall, 0.5). The calculator uses 3:4, but you can adjust based on your needs. Portrait means height > width.
Portrait vs landscape - what's the difference?
Portrait: Height > Width (taller than wide). Landscape: Width > Height (wider than tall). Portrait is used for vertical photos, phone screens, and vertical content. Landscape is used for horizontal photos, computer monitors, and widescreen content. Choose based on your content orientation.