Aspect Ratio Calculator
Find missing width or height for any aspect ratio. Presets for 16:9, 9:16, 1:1, 4:5 and cinema.
- Runs in your browser
- No upload on server
- Free, forever
- Enter values
- See result
- Copy or share
Ratio
:
Dimensions (px)
Preview
16:9
1920 × 1080
Decimal pixel values are rounded for display.
How this works — and why it's private
- Pick a preset or type a custom ratio like 16:9.
- Enter either the width or the height — the other fills in.
- Use the preview to sanity-check the shape before exporting.
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