Aspect Ratio Calculator

Reduce image or screen dimensions to a simplified aspect ratio.

See both the simplified ratio and decimal width-to-height relationship.

Your inputs stay on your device

Calculate aspect ratio

live result

Width

Height

Simplified ratio

25:3

Decimal ratio

8.3333

Home-project results are planning estimates. Measure your space and confirm material specifications before buying.

Context & Reference

For reducing image or display dimensions.

calculator guide

Divides integer width and height by their GCD.

Use this calculator with your own values, then review the clearly labelled result and copy it when you need it elsewhere.

Shows a simplified width:height ratio and width-to-height decimal.

1920 by 1080 reduces to 16:9.

Dimensions must be positive whole numbers.

This calculator runs locally in this browser. Dimensions must be positive whole numbers.

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