Reference library

Aspect Ratio Guides & Dimension Calculators

Compare common landscape, portrait and square aspect ratios. Calculate exact dimensions and find practical resizing examples.

Choose a shape to calculate a missing dimension, compare exact and rounded pixel sizes, and understand where that ratio fits. A ratio describes proportions, not image quality or file size.

16:9 Aspect Ratio Calculator & Dimensions

Calculate 16:9 dimensions, compare HD, Full HD and 4K sizes, and resize widescreen video without stretching.

4:3 Aspect Ratio Calculator & Resolution Guide

Find exact 4:3 dimensions such as 1024×768, calculate a missing side, and compare cropping and padding to widescreen.

9:16 Aspect Ratio Calculator for Vertical Video

Calculate portrait 9:16 dimensions such as 1080×1920, resize vertical video, and plan landscape-to-portrait crops.

1:1 Aspect Ratio Calculator for Square Images

Calculate square dimensions, compare 1080×1080 and other 1:1 sizes, and understand how much a square crop removes.

3:2 Aspect Ratio Calculator for Photos & Prints

Calculate 3:2 photo dimensions, scale a 6000×4000 image, and plan prints without stretching or unexpected cropping.

2:3 Aspect Ratio Calculator & Portrait Dimensions

Find 2:3 portrait dimensions, verify 512×768, and scale photos or print layouts while keeping the correct shape.

3:4 Aspect Ratio Calculator & Pixel Sizes

Calculate 3:4 portrait dimensions such as 900×1200, compare 4:3 orientation, and solve a missing width or height.

4:5 Aspect Ratio Calculator & 1080×1350 Sizes

Calculate 4:5 portrait sizes, verify 1080×1350, and compare a taller source with a 4:5 crop or padded canvas.

16:10 Aspect Ratio Calculator for Screens

Calculate 16:10 dimensions such as 1920×1200 and 2560×1600, and compare the shape with 16:9 widescreen.

Choose the right starting point

Use ratio guides when you already know the shape you need. Use resolution lookups when you know the existing dimensions. Use conversion planners when your source and destination have different shapes.

For a size not listed here, the main aspect ratio calculator accepts custom width and height values. You do not need a separate page for every possible dimension pair.

How these references are maintained

Ratio reductions, scale examples and crop geometry are calculated from the same tested functions used by the tool. Examples assume rectangular frames and matching measurement units. Platform requirements can change independently of the mathematics. Report an incorrect example through Contact us.