Aspect Ratio Calculator
Calculate and compare aspect ratios
What is Aspect Ratio Calculator?
Aspect Ratio Calculator computes and compares aspect ratios between dimensions — useful for responsive images, video embeds, and layout sizing.
When to use this tool
- Calculating the correct height for a given width and ratio
- Finding the aspect ratio of custom dimensions
- Sizing responsive iframes and video embeds
- Comparing common ratios (16:9, 4:3, 1:1)
How it works
Reduces the width-to-height ratio to its simplest form using the greatest common divisor (GCD). Also calculates the CSS aspect-ratio property value and provides common ratio presets.
Examples
About Aspect Ratio Calculator
Calculate and compare aspect ratios It runs entirely in your browser — no files are uploaded to any server, ensuring complete privacy and instant results.
- •Convert between HEX, RGB, and HSL
- •Generate gradients and shadows visually
- •Preview changes live before copying
- •Calculate PX to REM conversions
Last updated: 2025-01-15
FAQ
Calculate and compare aspect ratios
Yes, completely free. No signup required.
Yes. Runs entirely in your browser, no files uploaded.
Yes, works on any device with a modern browser.
No, everything runs in your browser.