Home Back

Pixel Size Ratio Calculator

Aspect Ratio Formula:

\[ R = \frac{W}{H} \]

pixels
pixels

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is a Pixel Size Ratio Calculator?

Definition: This calculator determines the aspect ratio between width and height dimensions in pixels.

Purpose: It helps designers, photographers, and video editors maintain consistent proportions across different media formats.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ R = \frac{W}{H} \]

Where:

Explanation: The calculator provides both the decimal ratio and simplified whole number ratio (like 16:9).

3. Importance of Aspect Ratio Calculation

Details: Correct aspect ratios ensure images and videos display properly without distortion across different devices and platforms.

4. Using the Calculator

Tips: Enter the width and height in pixels (must be positive integers). The calculator will show both decimal and simplified ratio formats.

5. Frequently Asked Questions (FAQ)

Q1: What are common aspect ratios?
A: Common ratios include 16:9 (HD video), 4:3 (standard definition), 1:1 (square), and 3:2 (35mm film).

Q2: Why is aspect ratio important?
A: It ensures proper display on screens and prevents stretching or cropping of images/videos.

Q3: How do I use the simplified ratio?
A: The simplified ratio (like 16:9) is easier to work with when scaling or converting between formats.

Q4: Can I calculate ratio from physical dimensions?
A: Yes, as long as width and height are in the same units, the ratio will be the same.

Q5: What if my ratio doesn't simplify neatly?
A: Some ratios (like 1920×1080 = 16:9) simplify neatly, while others may result in larger numbers (like 1366×768 = 683:384).

Pixel Size Ratio Calculator© - All Rights Reserved 2025