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Image Resize Calculator

Calculate resized pixel dimensions while preserving an image's aspect ratio.

Your inputs

Your result

Enter your information and select Calculate to see the result.

How this calculator works

The target width is divided by original width to find the scale factor, which is applied to height.

Change one assumption at a time to see which inputs have the greatest effect on the estimate.

Worked example

Resizing 4000 × 3000 pixels to 1200 pixels wide gives 900 pixels high.

Limitations

This estimate uses the dimensions and assumptions you enter. Confirm product specifications and local requirements before ordering materials.

Review this educational estimate against current quotes, official information, and your own budget before making a financial decision.