Aspect Ratio Calculator
Calculate aspect ratio from width and height, and resize while keeping proportions (16:9, 4:3…). Free online aspect ratio calculator.
✓ 100% free ✓ No sign up ✓ Runs in your browser — nothing uploaded
Aspect ratio
16:9
Decimal 1.7778
Height for width 1280 720
How to use Aspect Ratio Calculator
- 1Enter your numbers or dates.
- 2Results update instantly as you type.
- 3Copy the main result with one click.
Questions
Is Aspect Ratio Calculator free?
Yes. Aspect Ratio Calculator is 100% free with no limits, no watermark, no sign up and no email required.
Is my data sent anywhere?
No. Everything is calculated locally in your browser. Nothing you type is sent to or stored on any server.
Does Aspect Ratio Calculator work on my phone?
Yes. Aspect Ratio Calculator works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.
How accurate is it?
Calculations use standard formulas with full floating-point precision. For medical, legal or financial decisions, please confirm with a professional.