Calculate aspect ratios from dimensions or resize images and videos while maintaining proportions.
Aspect Ratio: 16:9
Decimal: 1.7778
Enter a new width or height to calculate the other dimension using the ratio above.
16:9
YouTube, Widescreen TV, Presentations
4:3
Classic TV, iPad, Older Monitors
1:1
Instagram Posts, Profile Pictures
9:16
Instagram Stories, TikTok, Reels
21:9
Ultrawide Monitors, Cinema
3:2
DSLR Photography, MacBook Display
4:5
Instagram Portrait, Posters
Convert shoe sizes between US, UK, EU, and CM for men and women.
Calculate your Body Mass Index with metric or imperial units.
Calculate X% of Y, percentage change, and what percent X is of Y.