Photo Print Size Calculator
Compare photo resolution with print sizes to calculate optimal print quality and crop area. Provides 300 DPI quality assessment and size recommendations.
4×6 inch (Standard)(102×152mm)
DPI Quality Guide
Crop Area Visualization
Recommended Print Sizes
All Sizes Comparison
| Size | DPI | Quality | Crop Area |
|---|---|---|---|
3×5 inch 76×127mm | 605 | Excellent | 55.0% |
4×6 inch (Standard) 102×152mm | 504 | Excellent | 50.0% |
5×7 inch 127×178mm | 432 | Excellent | 46.4% |
8×10 inch 203×254mm | 302 | Excellent | 40.0% |
8×12 inch 203×305mm | 252 | Good | 50.0% |
11×14 inch 279×356mm | 216 | Good | 41.1% |
16×20 inch 406×508mm | 151 | Acceptable | 40.0% |
A4 210×297mm | 259 | Good | 46.9% |
A3 297×420mm | 183 | Acceptable | 47.0% |
Letter 216×279mm | 275 | Good | 42.0% |
Passport Photo 35×45mm | 1708 | Excellent | 41.5% |
ID Photo 3×4cm 30×40mm | 1926 | Excellent | 43.6% |
ID Photo 2×3cm 20×30mm | 2563 | Excellent | 49.8% |
Visa Photo 51×51mm | 1512 | Excellent | 25.0% |
Aspect Ratio Comparison
About Photo Printing
- • DPI (Dots Per Inch): Dots per inch - indicates print sharpness.
- • 300 DPI: Professional print standard. No visible pixels even up close.
- • Crop: Part of the image is cut when photo and paper ratios differ.
📖 How to Use
- Select a camera/device preset or enter your photo resolution
- Choose your desired print size
- Check the DPI, quality grade, and crop area
- Select the optimal print size from recommendations
✨ Features
- ✓Popular camera/smartphone resolution presets
- ✓Various print sizes (3×5 to 16×20, A4, A3)
- ✓Passport and ID photo sizes included
- ✓DPI-based quality grading
- ✓Crop area calculation and visualization
- ✓Automatic optimal size recommendations
- ✓Aspect ratio comparison (3:2, 4:3, 16:9, etc.)
📐 Formula
DPI = Pixels ÷ Print Size (inches)💡 How It Works
- •DPI (Dots Per Inch) represents the number of dots (pixels) per inch.
- •300 DPI is the professional print standard - no visible pixels even up close.
- •200+ DPI provides good quality at normal viewing distances.
- •Below 150 DPI, pixels may become visible and images appear blurry.
- •Most smartphone cameras (12MP+) provide sufficient resolution for 4×6 prints.
- •When photo ratio (3:2, 4:3) differs from paper ratio, cropping occurs.
❓ FAQ
Q. Why is 300 DPI important?
A. 300 DPI is the threshold where the human eye cannot distinguish individual dots at 30cm viewing distance. Above this is considered 'photo quality'.
Q. What's the minimum resolution for 4×6 prints?
A. At 300 DPI: 1200×1800 pixels, about 2.2MP. Modern smartphones (12MP+) easily exceed this.
Q. Why does cropping occur?
A. When the photo ratio (e.g., 4:3) differs from paper ratio (e.g., 3:2). Fill mode crops; fit mode adds borders.
Q. How large can I print smartphone photos?
A. A 12MP (4000×3000) photo can print up to about 13×10 inches at 300 DPI, or 20×15 inches at 200 DPI with good quality.
Q. Why are passport/ID photo sizes different?
A. Passport photos (35×45mm) follow ICAO international standard. Different countries have their own ID photo specifications.
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