Aspect ratio calculator
Find an aspect ratio and resize while keeping it
Loading Aspect ratio calculator…
How to use it
- Enter your numbers.
- The result updates as you type.
- Change any value to see a different outcome.
Questions
How do I keep the aspect ratio when resizing?
Multiply the new width by the original height and divide by the original width. Going from 1920×1080 to a width of 1280 gives a height of 1280 × 1080 ÷ 1920 = 720.
Is anything I enter stored?
No. Calculations happen in your browser and nothing you type is sent or saved.
Is it free?
Yes, you can use it for free. A subscription removes limits and unlocks premium tools.