Enter Your Dimensions
Input the width and height of your image or design in any unit.
Design Tool
Aspect Ratio Calculator - Find Width & Height
Calculate aspect ratios for images, videos, and designs. Resize with locked ratios, compare presets, and scale dimensions easily.
16:9
Simplified Ratio
Raw Ratio1920:1080
Decimal Ratio1.7778:1
OrientationLandscape
Step-by-Step Breakdown
- Formula: Ratio = Width : Height
- Formula: Simplified Ratio = divide Width and Height by GCD
- Formula: New Height = New Width x (Original Height / Original Width)
- Formula: New Width = New Height x (Original Width / Original Height)
The simplest form of 1920:1080 is 16:9. Your dimensions match the 16:9 target ratio perfectly.
Equivalent Preset Formats
16:9 (Widescreen)
How Aspect Ratio Calculator Works
Calculate ratios and resize dimensions with ease
View the Ratio
The calculator instantly shows the simplified ratio and orientation of your dimensions.
Scale or Compare
Resize dimensions while maintaining the ratio, or compare to preset aspect ratios.
How Aspect Ratio Math Works
Aspect ratio compares width to height as a proportion. These formulas help you resize assets without distortion and match platform formats correctly.
Simplify a Ratio
Reduce both values by their greatest common divisor to get the cleanest ratio format.
Simplified ratio = width/gcd(width,height) : height/gcd(width,height)
Find Missing Height
Use the original proportion when a new width is known and height is missing.
New height = new width x (original height / original width)
Find Missing Width
Use the original proportion when a new height is known and width is missing.
New width = new height x (original width / original height)
Video Resize Example
A 1920x1080 video is a 16:9 ratio. If width becomes 1280, height should be 720 to keep the same shape.
Social Media Crop Planning
When converting 16:9 assets to 1:1, use fit to avoid cropping or fill when you need full-frame coverage.
Print Layout Conversion
Designs prepared in pixels can be converted to cm or inches while preserving ratio for consistent output.
Why Aspect Ratios Matter
Aspect ratios ensure that your images display correctly across different devices and platforms. Using the correct ratio prevents stretching, squishing, or unwanted cropping.
Different media require different aspect ratios - social media posts, videos, photography, and web design each have their standard ratios. Understanding these standards improves visual consistency.
When resizing or cropping images, knowing how to calculate and maintain aspect ratios ensures your designs remain proportional and professional-looking.
Aspect Ratio Tips
Use Lock Ratio When Resizing
Enable the lock ratio toggle to automatically maintain proportions when changing width or height.
Know Common Video Ratios
16:9 is standard for most video, 4:3 for older content, and 21:9 for cinematic formats.
Consider Platform Requirements
Instagram uses 1:1, Twitter uses 16:9, and Pinterest uses 2:3. Check your platform's requirements.
Use Advanced Mode for Comparison
Compare your dimensions to preset ratios to ensure optimal formatting for your platform.
Common Aspect Ratio Mistakes
Resizing Without Ratio Lock
Changing width and height independently can stretch graphics and make visuals look unprofessional.
Using Wrong Platform Ratio
Each platform favors specific formats. Matching expected ratios prevents awkward crops and black bars.
Ignoring Fit vs Fill
Fit preserves all content but may add empty space. Fill removes empty space but can crop important details.
Rounding Too Early
Rounding intermediate values too aggressively introduces errors in final dimensions.
What our customers say
Trusted by thousands of businesses
- “Installing was easy peasy“
- “I love the drag and drop editor“
- “UI is super intuitive“
Common Questions
Aspect Ratio FAQ
What is the most common aspect ratio?
- 16:9 (widescreen) is the most common for videos, displays, and web content. 4:3 was standard for older technology.
How do I maintain aspect ratio when resizing?
- Enable 'Lock aspect ratio' and change either width or height - the other will automatically adjust to maintain proportions.
What is the difference between fitting and filling?
- Fit maintains full visibility but may have empty space. Fill covers the entire area but crops the image.
Which aspect ratio should I use for social media?
- Instagram and Facebook use 1:1 (square), Twitter uses 16:9, and Pinterest uses 2:3 (vertical). Check each platform's guidelines.
Can I use any custom aspect ratio?
- Yes! Enter any custom width and height, and the calculator will simplify it and use it for calculations.
Lead capture formsStart collecting
Start collecting
more leads today.
Try Tapform risk-free for 14 days. Get full access to all features. No commitment, cancel anytime.
