1. What is a Pixel Aspect Ratio Calculator?

Definition: This calculator determines the aspect ratio of an image or display based on its pixel dimensions.

Purpose: It helps designers, photographers, and videographers understand and maintain proper image proportions for different media formats.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( AR \) — Aspect ratio (unitless)
• \( pixels\_x \) — Horizontal resolution (pixels)
• \( pixels\_y \) — Vertical resolution (pixels)

Explanation: The calculator divides the width in pixels by the height in pixels to get the aspect ratio, then simplifies it to the smallest whole number ratio.

3. Importance of Aspect Ratio Calculation

Details: Correct aspect ratio ensures images display properly without distortion across different devices and platforms.

4. Using the Calculator

Tips: Enter the horizontal and vertical pixel dimensions (must be positive integers). The calculator provides both decimal and simplified ratio formats.

5. Frequently Asked Questions (FAQ)

Q1: What are common aspect ratios?
A: 16:9 (HDTV), 4:3 (SDTV), 1:1 (square), 21:9 (ultrawide), and 3:2 (35mm film).

Q2: How do I simplify an aspect ratio?
A: Divide both numbers by their greatest common divisor (GCD).

Q3: Is pixel aspect ratio different from display aspect ratio?
A: In digital imaging, they're typically the same. Only in some video formats might they differ.

Q4: Why does my 1920x1080 image show as 16:9?
A: Because 1920/1080 simplifies to 16/9 (dividing both by 120).

Q5: How do I calculate dimensions from aspect ratio?
A: Multiply the ratio by your desired height to get width, or divide width by ratio to get height.