How to Calculate Aspect Ratio
Aspect ratio is the proportional relationship between width and height. It's expressed as width:height (e.g., 16:9).
Common aspect ratios: 16:9 (widescreen, HDTV), 4:3 (classic TV), 21:9 (ultrawide), 1:1 (square), 3:2 (photography). For example, 1920x1080 simplifies to 16:9.
Maintaining aspect ratio prevents distortion when resizing images or videos. Use the greatest common divisor to find the simplest ratio form.
Quick Tips
- 1 mile = 1.609 km (miles are bigger)
- 1 kg = 2.205 lbs (roughly double + 10%)
- Temperature: (°F - 32) × 5/9 = °C
Frequently Asked Questions
16:9 (widescreen).
16:9 for modern screens, though 21:9 is growing for monitors.
Images/videos appear stretched or squashed (distorted).
1:1 (square) or 4:5 (portrait) for feed, 9:16 for stories/reels.