Photo Print Sizes Guide: 4×6, 5×7, 8×10 & More (2026)
Learn the standard photo print sizes for 2026. From 4×6 to 8×10 and larger, get exact pixel requirements and DPI settings to avoid blurry cropped prints.
You ordered prints, they arrived, and something's wrong. Heads are chopped off. Backgrounds look stretched. A portrait you loved is cropped into something unrecognizable.
It happens because your photo's dimensions don't match the print size you chose — so the lab fills the gap by cropping. Getting the right photo print sizes before you order takes two minutes and saves the headache.
Here's every standard size, the pixels you need, and how to resize your photos to fit exactly.
Standard Photo Print Sizes at a Glance
| Print Size | Aspect Ratio | Min Pixels (150 DPI) | Recommended (300 DPI) |
|---|---|---|---|
| 4×6 inches (10×15 cm) | 3:2 | 600×900 px | 1,200×1,800 px |
| 5×7 inches (13×18 cm) | 5:7 | 750×1,050 px | 1,500×2,100 px |
| 8×10 inches (20×25 cm) | 4:5 | 1,200×1,500 px | 2,400×3,000 px |
| 8.5×11 inches (Letter) | ~8.5:11 | 1,275×1,650 px | 2,550×3,300 px |
| 11×14 inches | ~11:14 | 1,650×2,100 px | 3,300×4,200 px |
| 16×20 inches | 4:5 | 2,400×3,000 px | 4,800×6,000 px |
| 20×30 inches | 2:3 | 3,000×4,500 px | 6,000×9,000 px |
Quick rule: For home printing and standard lab orders, aim for 300 DPI. For large-format prints (16×20 and bigger) viewed from a distance, 150–200 DPI is fine.
The Aspect Ratio Problem Most People Don't Expect
Here's what most print guides skip over: your phone camera doesn't shoot in the same ratio as most print sizes.
Most smartphones shoot in 4:3 by default (or 16:9 in landscape). The most popular print size — 4×6 inches — is 3:2. Those two ratios don't match.
What does your print lab do when there's a mismatch? It crops. Usually from the edges. Sometimes right into the subject.
Sound familiar? Say you photograph a group at a family event. Your phone captures a wide 4:3 shot. You order 4×6 prints. The lab trims both sides to hit that 3:2 ratio — and suddenly, two people on the edges are cut off.
The fix: resize your photo to the exact target dimensions before uploading, using a tool that lets you choose whether to crop or add padding.
DPI: How Many Pixels Does Your Photo Actually Need?
DPI (dots per inch) tells your printer how densely to pack pixels onto the paper. For most photo printing:
Here's what that looks like in practice: a 4×6 inch print at 300 DPI needs at least 1,200×1,800 pixels. Most modern smartphones shoot at 12–50 megapixels, which is easily enough — the issue is almost always aspect ratio, not pixel count.
Key takeaway: If your photo already exceeds the minimum pixel count, focus on resizing to the right dimensions rather than just changing the DPI metadata. Pixel dimensions drive print quality; DPI is what the printer reads.
To check your photo's current DPI before printing, use Check Image DPI. To update it, use Change Image DPI.
Metric Print Sizes (10×15, 13×18, 20×25 cm)
If you're ordering prints in Europe, Australia, or from international labs, you'll see centimeter sizes. They map directly to the inch sizes most people recognize.
| Metric Size | Inch Equivalent | Aspect Ratio |
|---|---|---|
| 10×15 cm | 4×6 inches | 3:2 |
| 13×18 cm | 5×7 inches | 5:7 |
| 15×21 cm | ~6×8 inches | ~5:7 |
| 20×25 cm | 8×10 inches | 4:5 |
| 20×30 cm | 8×12 inches | 3:2 |
| 30×40 cm | 12×16 inches | 3:4 |
| 30×45 cm | 12×18 inches | 2:3 |
| A4 (21×29.7 cm) | 8.3×11.7 inches | ~1:√2 |
The 20×30 cm size is worth calling out. It's a 3:2 ratio — the same as most smartphone cameras. If you want prints without any cropping at all, 10×15 cm and 20×30 cm are your safest choices for phone photos.
How to Resize Your Photo for Printing Using imresizer
imresizer lets you resize photos in inches, centimeters, and millimeters — the exact units print labs use. Everything runs in your browser, with no account, no software, and no watermarks. Your photos never leave your device.
To resize in inches:
- Go to Resize Image in Inches
- Upload your photo — drag and drop or click to select. JPG, PNG, and WebP are all supported. You can upload up to 12 images at once for batch processing.
- Enter your target print dimensions (e.g., Width: 6, Height: 4 for a landscape 4×6 print), set DPI to 300, and choose a resize mode — Crop to trim to exact dimensions, or Add Padding to keep the full photo with white borders. Download instantly.
To resize in centimeters: Use Resize Image in Centimeters — same process, metric units.
To resize in millimeters: Use Resize Image in Millimeters — ideal for passport photos, ID cards, and official document photos.
Need to resize and reduce file size at the same time? Resize & Reduce Image handles both in one step.
Everything runs in your browser — no signup or software needed.
Key Takeaways
Free Photo Print Resize Tools
Frequently Asked Questions
What is the standard photo print size?
The most common standard photo print size is 4×6 inches (10×15 cm). It's the default at most photo labs. The next most popular are 5×7 inches and 8×10 inches. Each has a different aspect ratio, so resizing your photo to match the target size before uploading avoids unexpected lab crops.
How many pixels do I need for a 4×6 print?
For a high-quality 4×6 inch print at 300 DPI, you need at least 1,200×1,800 pixels. At 150 DPI (acceptable for casual prints), you need 600×900 pixels. Most smartphone photos have plenty of pixels — the issue is almost always the aspect ratio mismatch, not pixel count.
What is the difference between 4×6 and 5×7 photo sizes?
A 4×6 print has a 3:2 aspect ratio — the standard for everyday photos. A 5×7 print is 5:7 — slightly taller relative to its width. The same photo printed at both sizes will be cropped differently, so always resize to the exact target dimensions first.
How do I resize a photo to exactly 4×6 inches online?
Go to imresizer's Resize Image in Inches tool, upload your photo, set the dimensions to 6×4 inches (landscape) or 4×6 inches (portrait), and choose Crop mode for an exact fit or Add Padding to keep the full photo with white borders. Download and upload directly to your print lab.
What DPI should photos be for printing?
Use 300 DPI for standard photo prints (4×6, 5×7, 8×10) — this delivers sharp results at normal viewing distance. For large-format prints (16×20 and bigger) viewed from farther away, 150–200 DPI is acceptable. Never use 72 DPI for printing — that's a web-only resolution and will look pixelated on paper.