Loading...
Find the perfect size and aspect ratio for AI-generated images
An image aspect ratio is the proportional relationship between width and height (e.g., 16:9, 1:1). Choosing the correct ratio ensures images display properly across platforms without cropping or stretching.
Copy these prompts and replace [SUBJECT] or [PRODUCT] with your content.
Professional product photography of [PRODUCT], studio lighting, white background, high detail, commercial quality, aspect ratio 1:1
Eye-catching [SUBJECT] for social media, vibrant colors, modern style, clean composition, trending aesthetic, aspect ratio 1:1
Stunning hero image of [SUBJECT], dramatic lighting, cinematic quality, high resolution, website header style, aspect ratio 1:1
Digital illustration of [SUBJECT], flat design, vector style, bold colors, minimal background, aspect ratio 1:1
Different platforms and use cases require specific image dimensions. Using the correct aspect ratio ensures your images display properly without cropping or stretching.
Midjourney: /imagine [prompt] --ar 16:9
DALL-E: Select size in the interface
Stable Diffusion: Set width/height params
Tip: Include aspect ratio in your promptFormula
Aspect Ratio = Width / Height | GCD Simplification: W:H = (W/GCD):(H/GCD) | Scale to target: NewW = TargetH × (W/H)GCD = Greatest Common Divisor — used to simplify ratio (e.g., 1920/1080 → GCD=120 → 16:9)
TargetH = Desired output height; multiply by ratio to get correct width
W/H = Decimal ratio used to maintain proportions when scaling to new dimensions
Worked Example
Instagram Post: 1080×1080 → ratio
Did you know? The 16:9 widescreen aspect ratio was chosen as the HDTV standard in 1988 because it is the geometric mean of 4:3 (traditional TV) and 2.35:1 (cinematic widescreen), giving it the best average letterboxing for both formats.
Sources
Convert width/height to aspect ratios, scale dimensions, and generate responsive embed CSS for any layout.
Estimate clicks, conversions, revenue, ROAS, CPA, and net profit from your Google Ads budget.
Pick social sizes and aspect ratios for image generation. Copy prompt snippets and recommended dimensions for each platform.
Preview how your links appear on Facebook, Twitter, LinkedIn, and Slack with Open Graph tags.
Build trackable campaign URLs with UTM parameters. Includes source and medium presets and automatic value cleanup.
Calculate video file sizes from bitrate or find required bitrate for target size.