3:2 Aspect Ratio Calculator
CalculatorUnderstanding the 3:2 Proportion
The 3:2 (1.50:1) aspect ratio is the enduring golden standard of 35mm photography, digital DSLR sensors, and modern productivity laptops.
aspect-ratio: 3 / 2;padding-top: 66.67%;Common 3:2 Resolutions in Pixels
The table below outlines standard industrial resolutions that conform strictly to the 3:2 aspect ratio, including total pixel counts and target display hardware.
| Standard / Format | Dimensions (W × H) | Total Pixels | Megapixels | Common Hardware & Uses |
|---|---|---|---|---|
| 24 MP Full Frame (6K) | 6000 × 4000 | 24,000,000 | 24.00 MP | Sony A7 series, Canon EOS R6, Nikon Z6 |
| Microsoft Surface Studio (4.5K) | 4500 × 3000 | 13,500,000 | 13.50 MP | 28" Surface Studio All-in-One creative workstation |
| Surface Book 3K | 3000 × 2000 | 6,000,000 | 6.00 MP | 13.5" Surface Book, PixelSense mobile displays |
| Surface Pro Retina | 2880 × 1920 | 5,529,600 | 5.53 MP | Surface Pro 8 / 9 / 10 / 11 2-in-1 tablets |
| Surface Laptop 2K | 2160 × 1440 | 3,110,400 | 3.11 MP | Surface Laptop Go, Huawei MateBook X Pro |
| Standard Web Photography | 1500 × 1000 | 1,500,000 | 1.50 MP | Online photo galleries, responsive blog headers |
Where is 3:2 Used?
DSLR & Mirrorless Camera Sensors
Modern digital full-frame and APS-C cameras from Sony, Leica, Canon, Nikon, and Fujifilm shoot in native 3:2, echoing classic 35mm film geometry (36mm × 24mm).
Microsoft Surface & Productivity Displays
Microsoft standardized on 3:2 across the Surface laptop and tablet lineup because it displays 18% more vertical text and code lines than traditional 16:9 screens.
Standard Photographic Prints
The 3:2 proportion matches classical print dimensions such as 4×6 inches and 12×18 inches with zero cropping required on darkroom or photo lab paper.
Artisan Portfolio Websites
Visual artists, interior designers, and architects prefer 3:2 for project hero images because it balances panoramic breadth with editorial verticality.
Production Tips for 3:2 Assets
- When exporting 3:2 photos for web headers, target 1500×1000px at 82% WebP quality to keep payload size under 120KB.
- If printing 3:2 files at 300 DPI, an 18×12 inch print requires 5400×3600 pixels of original sensor resolution.
- Use `aspect-ratio: 3 / 2;` on picture elements to eliminate cumulative layout shift (CLS) during browser paint.
Frequently Asked Questions
Why is 3:2 the standard for photography?
In 1913, Oskar Barnack developed the 35mm Leica camera using standard 35mm motion picture film fed horizontally, exposing frames measuring 36mm wide by 24mm tall, which simplifies to 3:2.
How do I calculate height from width in 3:2?
Multiply width by 2 and divide by 3. For example, for a photo width of 3000 pixels: (3000 × 2) ÷ 3 = 2000 pixels.
Is 3:2 wider or taller than 16:9?
At equal screen widths, 3:2 is noticeably taller than 16:9 (decimal 1.50:1 vs 1.78:1). It provides significantly more vertical screen real estate for documents and reading.
What is the padding-top percentage for 3:2 in CSS?
Dividing 2 by 3 gives 0.6666..., so the padding-top percentage is exactly 66.67%. In modern CSS, simply declare `aspect-ratio: 3 / 2;`.