What aspect ratios are included in presets?

We include 12 common ratios: 16:9 (YouTube), 4:3 (TV), 1:1 (Instagram), 9:16 (Stories), 3:2 (Classic), 5:4 (Print), 21:9 (Ultrawide), 2:3 (Portrait), 3:4 (Tablet), 16:10 (Laptop), 5:3 (Film), and 2.35:1 (CinemaScope).

Can I calculate custom aspect ratios?

Yes, enter any width and height to calculate the custom aspect ratio and get proportional dimensions. The calculator automatically simplifies the ratio to its lowest terms.

How does the lock ratio feature work?

When you lock the aspect ratio, changing either width or height automatically calculates the other dimension to maintain the original proportions. This is useful when resizing images.

Can I stack multiple calculations?

Yes, you can add multiple calculations to the stack for comparison. Each calculation includes a resize calculator to compute new dimensions based on the stored ratio.

How do I use the resize calculator?

For each stacked calculation, enter a new width or height and the tool automatically calculates the proportional other dimension. The result is auto-copied to clipboard for quick use.

Can I export my calculations?

Yes, click the Export button to download all stacked calculations as a JSON file containing dimensions, aspect ratios, and decimal values for documentation.

Images Tool Box

Analysis

Aspect Ratio Calculator Online Free with Stacking & Presets

Calculate aspect ratios and maintain proportions when resizing images using our free online tool. Stack multiple calculations, lock aspect ratios for resizing, use 12 common presets (16:9, 4:3, 1:1, etc.), adjust decimal precision, and export calculations. Perfect for social media, print, and web design.