FREE IMAGE CALCULATOR
Aspect Ratio Calculator
Calculate and simplify image aspect ratios, find scaled dimensions, and compare common ratios such as 16:9, 4:3, and 1:1.
✓ Instant calculation✓ No upload✓ Common presets✓ Free to use
01 Enter dimensions
02 Optional scaled size
MORE IMAGE TOOLS
Keep working with the image.
FORMULA
How aspect ratio is simplified.
Divide both width and height by their greatest common divisor. For example, 1920×1080 simplifies to 16:9.
When you enter a new width or height, ImageShaper preserves the original ratio and calculates the matching dimension.
COMMON RATIOS
Quick reference.
- 1:1 — square
- 4:3 — classic displays and photos
- 3:2 — common camera ratio
- 16:9 — widescreen video
- 9:16 — vertical video and stories
FAQ
Aspect ratio basics.
Does aspect ratio depend on file size?
No. Aspect ratio only compares pixel width with pixel height.
Can two images have the same ratio at different sizes?
Yes. 1920×1080 and 1280×720 are both 16:9.
Are my dimensions sent to analytics?
No. Only generic calculator-use events are counted; entered dimensions are not sent.