Aspect Ratio Calculator
Calculate scaled dimensions for any aspect ratio.
Locked at 16:9. Resize either side, the other updates automatically.
About this tool
Lock an aspect ratio (16:9, 4:3, 9:16, custom) and resize any side — useful for thumbnails, prints, and social media.
Related tools
More calculators you might find useful.
Other categories
Looking for something different? Browse the rest of the catalog.
Generators
Generate anything.
Formatters
Tidy up text.
Checkers
Verify anything.
Converters
Switch units fast.
Trackers
Stay on schedule.
SEO
Rank smarter.
Engineering
Build smarter.
YouTube
Grow your channel.
Gaming
Play sharper.
Music
Mix it right.
Investing
Invest smarter.
Health & Fitness
Live stronger.
Home & DIY
Make it home.
Travel
Travel smarter.
Productivity & Lifestyle
Decide faster.
Photography
Sharper images.
Cars
Save on cars.
Sponsored suggestions
- Found a money leak? Track every dollar with a budgeting app
YNAB, Monarch, and Copilot Money all offer free trials. We use YNAB ourselves.
- Save on your energy bill: pick a cheaper electricity rate
Compare local rates in 2 minutes with EnergySage (US).
- Like this site? You'll love our weekly newsletter
One new tool, one fresh Reddit pain point, every Friday. No spam.
Some links below are affiliate links. We may earn a commission if you purchase through them, at no extra cost to you.