Canvas Size & Aspect Ratio
Calculate dimensions, aspect ratios, print sizes at any DPI, and file size estimates. Perfect for social media, print, and digital art workflows.
About This Calculator: Canvas Size & Aspect Ratio
?Why It Matters
Choosing the wrong canvas size leads to cropping, pixelation, or oversized files. Artists and designers need to match dimensions to platform specs (Instagram, YouTube) or print requirements (300 DPI).
⚙How It Works
We convert between pixels, inches, and cm. We compute aspect ratio (simplified GCD), print size at your DPI, megapixels, and estimated file sizes for uncompressed, JPEG, and PNG.
📖What You'll Learn
- 1080px on the longest side is the social media sweet spot
- 300 DPI is standard for fine art and professional print
📋 Quick Examples — Click to Load
Canvas Preview
📊 Common Aspect Ratios
Width/height ratio comparison
📊 Resolution Tiers
Megapixels by standard resolution
📊 File Size by Format
Estimated file sizes (MB)
📈 Megapixels by Resolution
Standard resolution tiers
For educational and informational purposes only. Verify with a qualified professional.
✏️ Design Facts & Insights
1080×1080 is the standard Instagram square post size.
300 DPI ensures sharp print output for fine art and photography.
16:9 is the dominant aspect ratio for video and displays.
Over 2 billion images are shared daily. 1080×1080 is the standard for Instagram square posts. 300 DPI is the industry standard for fine art and professional print. 16:9 dominates video and displays. Knowing your canvas size and aspect ratio ensures your work displays correctly everywhere.
Key Takeaways
- • Aspect ratio = width ÷ height, simplified with GCD (e.g., 1920÷1080 → 16:9).
- • 300 DPI for print; 72 DPI for screen. Print size (in) = pixels ÷ DPI.
- • Lock aspect ratio when scaling to avoid distortion.
- • File size: Uncompressed RGBA ≈ 4 bytes/pixel; JPEG ~15%; PNG ~50%.
Did You Know?
How Canvas Size & Aspect Ratio Work
Aspect Ratio
Width ÷ height, simplified by greatest common divisor. 1920÷1080 → GCD 120 → 16:9.
Print Size
Print width (inches) = width_px ÷ DPI. At 300 DPI, 2400×3000 px = 8×10".
File Size
Uncompressed RGBA: 4 bytes per pixel. JPEG/PNG estimates based on typical compression.
Expert Tips
Common Canvas Sizes by Use Case
| Use Case | Dimensions | Ratio | Notes |
|---|---|---|---|
| Instagram Square | 1080×1080 | 1:1 | Feed post |
| YouTube Thumbnail | 1280×720 | 16:9 | HD |
| Album Cover | 3000×3000 | 1:1 | Spotify/Apple |
| Movie Poster | 27×40 in | ~1.48:1 | One-sheet |
| Business Card | 3.5×2 in | 1.75:1 | US standard |
| A3 Print @ 300dpi | 3508×4961 | √2:1 | ISO 216 |
Frequently Asked Questions
What is the best canvas size for Instagram?
Instagram Square: 1080×1080 (1:1). Portrait: 1080×1350 (4:5). Landscape: 1080×566 (1.91:1). Stories/Reels: 1080×1920 (9:16). Use 1080px on the longest side for optimal quality without oversized files.
How do I calculate aspect ratio from dimensions?
Divide width by height and simplify using GCD. Example: 1920÷1080 = 16/9. Or use this calculator: enter width and height, and it outputs the simplified ratio (e.g., 16:9, 4:3, 1:1).
What DPI should I use for print?
300 DPI for fine art, photography, and professional print. 150 DPI for large format (posters, banners). 72 DPI is screen-only. At 300 DPI, an 8×10" print needs 2400×3000 pixels.
What are standard canvas sizes for digital art?
Common: 1920×1080 (FHD), 2560×1440 (QHD), 3840×2160 (4K), 3000×3000 (album art). Procreate default: 2048×2732. For print at 300 DPI: 8×10" = 2400×3000, A3 = 3508×4961.
How do I scale dimensions while keeping aspect ratio?
Lock aspect ratio and change one dimension; the other updates automatically. Or scale by a factor: new width = old width × factor, new height = old height × factor. This calculator does both.
How big is a 1080×1080 image in MB?
Uncompressed RGBA: ~4.4 MB. JPEG (quality 85): ~200–500 KB. PNG: ~1–2 MB. Actual size depends on complexity. This calculator estimates based on pixel count and typical compression ratios.
Key Statistics
Official Data Sources
⚠️ Disclaimer: File size estimates are approximate. Actual JPEG/PNG sizes depend on image complexity and compression settings. Print quality also depends on viewing distance and paper type.
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