Creator · FREE TO USE
Aspect ratio calculator
Resize an image proportionally without changing its shape.
Your choices
Numbers shown initially are examples. Replace them with your own figures. Inputs are processed for this response and are not stored by this tool.
How it works
New height = original height × new width ÷ original width, rounded to a pixel. This preserves the ratio; it does not crop or edit a file. Check the destination platform before exporting.
Example and practical tip
A 1920 × 1080 image resized to 1200 pixels wide is 1200 × 675.
Is an account required?
No. Use this tool as a guest. Nothing is published or sent to another person.
Can I save this in UNLISPACE?
Copy the result and review it first. Your Space, Stream and business tools use their own signed-in saving and approval steps.
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