4:3 Standard CRT Ratio Calculator.
Compute pixel configurations for the standard 4:3 aspect ratio format. The calculator below is pre-filled and locked to these proportions.
19.5:9 (modern phones) are fully supported and will not be truncated. Lock aspect ratio keeps the dimensions locked together.
Drag and drop your image here, or browse file
Supports JPG, PNG, WEBP, SVG. Processed locally in your browser.
Image Metadata
Social Media Crop Simulation
| Ratio Aspect | Decimal Value | Calculated Dimensions | Actions |
|---|
Enter arbitrary pixel coordinates (e.g. your system display resolution) and we will scan our presets database to find the closest matches.
Closest Presets Matches
How Aspect Ratio is Calculated.
An aspect ratio represents the proportional relationship between a shape's width and its height. Mathematically, it is written as a simplified fraction quotient of $W:H$.
If you have a set of pixel dimensions ($Width \times Height$) and want to determine their simplest integer aspect ratio, you must find the Greatest Common Divisor (GCD) of both numbers and divide each dimension by it:
Ratio Height = Height ÷ GCD(Width, Height)
For instance, for a standard Full HD display size of 1920 × 1080 px, the Greatest Common Divisor is 120:
1080 ÷ 120 = 9
Result = 16:9
function calculateGCD(width, height) {
width = Math.abs(width);
height = Math.abs(height);
// Euclid's subtraction algorithm
while (height) {
const temp = height;
height = width % height;
width = temp;
}
return width;
}
// Example Usage:
const gcd = calculateGCD(1920, 1080); // returns 12019.5:9 or 2.39:1 by dynamic multiplier shifts prior to computing modulo residues.
Standard Platform Dimensions.
A comprehensive database of social media asset sizes, dimensions, and standard aspect ratios. Use the search field below to instantly filter entries.